MULTIQUIP HHX Manual de usuario

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 1 OF 12

HHX Ride-On Trowel

Cross Shaft and Drive Pulley Installation Instructions

The following instructions are intended to assist the user in the installation of a cross shaft and/or drive pulley.

Please read all instructions before installation.

REQUIRED TOOLS

WORK SAFELY!

Only a qualied service technician with proper training

should perform this installation. Follow all shop safety rules

when performing this installation.

Table 1. Cross Shaft and Drive Pulley Kits

Item Qty. Part No. Description Remarks

A 1 30106 Cross Shaft Assy.

Service Kit Includes items 1–6

B 1 23363-2S Pulley, Lower Assy. Includes items 4–7

1 1 30104 Cross Shaft Assy.

2 1 30107 Screw, FHCS,

3/8-16 × 1.25 LH Thread

3 1 30110 Spacer, CSK Ø1.375

Ø.391 × .281 No longer required

4 1 19379-014 Loctite™ 271 Red

5 1 32434 Retaining Compound,

Loctite™ 609

6 1 32441 Primer, Loctite™ 7649

7 1 23363-2 Pulley, Lower

8 1 23436 Alignment Gauge

9 1 23415 Sleeve, Alignment Gauge

10 A/R 11773 Shims .031 Thickness

11 1 1477 Loctite™ 242 Blue

12 1 23420 Coupler, CV Joint

NOTICE

The coupler (Item 12, P/N 23420) is intended to replace

the existing coupler. This new, improved coupler will help

minimize vibrations and run-out of the rotating assembly.

Hammer

Torque wrench

3/8" ratchet

3/8", 7/16", 1/2", 3/4", 9/16",

5/8", 15/16", 13mm sockets

3/16" and 1/4" Allen sockets

Open/box-end wrenches

Misc. pry bars

CV joint grease

Grease gun with multi-purpose

grease

2" × 4" wood block

Forklift/hoist

Clutch puller

Heavy-duty jack stands

Scotch-brite pad

Brake cleaner

PARTS

Verify that all parts are accounted for. See Figure 1 and

Table 1.

Figure 1. Cross Shaft and Drive Pulley Kits

RED

LOCTITE

BLUE

LOCTITE

RETAINING

COMPOUND

PRIMER

NEW CRITICAL INSTRUCTIONS. MUST READ!

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 2 OF 12

LIFTING THE TROWEL

1. Send a lifting strap or chain through the lift points on

each side of the trowel. Attach the ends of the lifting

strap or chain to the lifting device (Figure 2).

Figure 2. Lifting the Trowel

2. Place the trowel on heavy-duty jack stands.

JACK STANDS

LIFTING

STRAP

LIFT

POINT

CAUTION

Trowel blades are sharp. Keep clear of blades while

performing procedure. It is recommended that trowel

blades are removed to prevent injury.

SIDE GUARD REMOVAL

1. Remove side guards from left and right seat frame

assemblies. See Figure 3.

Figure 3. Remove Side Guards

BATTERY REMOVAL

Refer to Figure 4.

1. Disconnect battery cables from the battery.

2. Remove battery from battery plate. Set aside in a

clean, safe place.

Figure 4. Battery and Spare Belt Removal

REMOVE

SIDE

GUARDS

REMOVE

BATTERY

DISCONNECT

BATTERY

CABLES

BATTERY

PLATE

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 3 OF 12

SEAT FRAME ROTATION/REAR PANEL REMOVAL

Refer to Figure 5.

1. Use a 14mm socket to remove the 2 bolts that secure

the left seat frame to the rear engine panel. Set bolts

aside for later use.

2. Rotate the left-side seat frame to the horizontal

position.

3. Remove side panel on right seat frame.

4. Repeat steps 1 and 2 for right-side seat frame

assembly.

5. Rotate seat to vertical position.

6. Cut cable tie that secures choke cable to rear engine

panel.

7. Loosen clamp around air intake hose.

8. Use a 16mm socket to remove the 2 bolts that secure

the rear engine panel to the frame. Set bolts aside

for later use.

9. Remove the rear engine panel and hardware. Set aside

in a clean, safe place.

Figure 5. Frame Rotation and

Rear Engine Panel Removal

ROTATE

SEAT FRAME

ROTATE

SEAT

REMOVE

SIDE PANEL

REMOVE REAR

ENGINE PANEL

AND HARDWARE

(HHXD5 PICTURED ABOVE)

LOOSEN

CLAMP

CHOKE

CABLE

TIE

SPLASH GUARD REMOVAL

1. Remove splash pan and hardware from trowel frame.

Set aside in a clean, safe place. See Figure 6.

Figure 6. Remove Splash Guard

FUEL TANK REMOVAL

Refer to Figure 7.

1. Place fuel shut-off valve on fuel tank in the OFF position.

2. Disconnect fuel lines from the fuel tank. Clamp lines

to prevent fuel spillage.

3. Disconnect electrical connection from the bottom of the

fuel pump (HHXG5) or fuel lter (HHXD5).

NOTICE

If trowel blades have not been removed, they must be

pitched at in order to allow removal of splash pan.

REMOVE

SPLASH GUARD

AND HARDWARE

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 4 OF 12

Figure 7. Disconnect Fuel Lines and

Electrical Connections

4. Use a 13mm socket to remove the 4 bolts securing the fuel

tank to the frame. Set aside for later use. See Figure 8.

5. If desired, fuel tank may be drained to make lifting from

the trowel easier.

6. Remove fuel tank from frame. Set fuel tank aside in a

clean, safe place.

Figure 8. Fuel Tank Removal

INJECTION

PUMP

CARBURETOR

FUEL

SHUT-OFF

VALVE

FUEL

SHUT-OFF

VALVE

DISCONNECT

ELECTRICAL

CONNECTION

DISCONNECT

ELECTRICAL

CONNECTION

DISCONNECT

FUEL LINE

DISCONNECT

FUEL LINE

REMOVE

FUEL TANK

CV AXLE ASSEMBLY (LEFT-SIDE) REMOVAL

Refer to Figure 9.

1. Starting at the left-side gearbox, use a 1/4" Allen

wrench to remove the 3 bolts that secure the CV axle

to the left-side gearbox.

2. Next, use a 1/4" Allen wrench to remove the 3 bolts that

secure the CV axle to the lower drive pulley coupler.

3. Remove CV axle assembly. A mallet may be needed

to dislodge the CV axle.

4. Set CV axle assembly and mounting hardware aside

in a clean, safe place.

CV AXLE ASSEMBLY (RIGHT-SIDE) REMOVAL

Refer to Figure 9.

1. Remove the 3 bolts that secure the CV axle to the

right-side gearbox (optional).

2. Remove the 3 bolts that secure the CV axle to the

cross shaft coupler.

3. Remove CV axle assembly (optional). Set CV axle assembly

and mounting hardware aside in a clean, safe place.

NOTICE

Spider assemblies must be locked to the frame with

chains in order to prevent clutch rotation.

NOTICE

Note that the 3 bolts securing the CV axle to the coupler

are shorter than those securing the CV axle to the

gearbox. Remember bolt orientation for reassembly.

NOTICE

If using a mallet, DO NOT hit the CV axle with too

much force. This could cause the ball bearings to

become dislodged.

NOTICE

Disconnecting the right-side CV axle assembly from the

gearbox is optional. Inspect rubber boots for damage or dirt.

If CV axle is in good condition, it is not necessary to remove it

from the gearbox. Removal of the bolts securing CV axle

to the cross shaft coupler is mandatory.

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 5 OF 12

Figure 9. Drive Assembly Removal

LEFT-SIDE

GEARBOX

RIGHT-SIDE

GEARBOX

REMOVE

CV AXLE

REMOVE

CROSS

SHAFT

SHIMS

REMOVE

LOWER

DRIVE

PULLEY

COUPLER

REMOVE

UPPER DRIVE

PULLEY/CLUTCH

ENGINE

COUPLER

REMOVE

(3 PLACES)

(OPTIONAL)

REMOVE

(3 PLACES)

REMOVE

(3 PLACES)

REMOVE

CV AXLE

(OPTIONAL)

REMOVE

(3 PLACES)

REMOVE

CVT BELT

REMOVE

(4 PLACES)

UPPER CVT PULLEY REMOVAL

Refer to Figure 9.

1. Remove the clutch retaining screw and step washer

that secure the clutch/pulley assembly to the engine

shaft.

2. Pull clutch assembly off engine shaft. Puller tool

(P/N 23155) may be required to remove clutch.

CROSS SHAFT/LOWER PULLEY REMOVAL

Refer to Figure 9.

1. Use a 16mm socket to remove the 4 bolts that secure the

cross shaft bearing blocks to the engine cradle.

2. Remove cross shaft and lower pulley assembly.

Discard item that will be replaced (either cross shaft or

lower pulley or both, as required). Retain all other parts.

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 6 OF 12

CROSS SHAFT/LOWER PULLEY INSTALLATION

Cross Shaft Mounting

1. Remove dust caps located on top of new cross shaft

bearings (Figure 10).

2. Using a grease gun, grease both bearings. Use

multipurpose grade grease.

3. Reinstall dust cap to prevent contamination of the bearing.

Figure 10. Bearing Lubrication

4. Use a 16mm socket to install new cross shaft assembly

(P/N 30104) onto engine cradle with 4 existing screws.

Apply Blue Loctite (P/N 1477). See Figure 11.

NOTICE

The trowel frame bar on which the left hydraulic steering

cylinder mounts prevents the lower pulley from sliding

on and off the cross shaft when it is mounted to the

engine cradle. Because the alignment of the cross shaft

is critical to drive assembly operation, the following

procedure will be necessary.

1. Mount the cross shaft to the engine cradle.

2. Mark left bearing block position on the bottom of

the cradle.

3. Shim cross shaft to align with stub shaft.

4. Remove cross shaft.

5. Mount lower pulley onto cross shaft.

6. Use scribe marks on engine cradle to reinstall cross

shaft (with lower pulley) into the same position it was

in during shimming.

The following sections describe the above procedure

in detail.

GREASE GUN

ZERK FITTING

DUST CAP

BEARING

Figure 11. Cross Shaft Installation

5. Torque cross shaft mounting screws to 50 lbf·ft (68 N·m).

Marking Cross Shaft Position

It is important to use a scribe to mark the edges of both

bearing blocks on the bottom of the engine cradle. See

Figure 12.

Figure 12. Cross Shaft Scribe Marks

CROSS SHAFT ASSY.

(P/N 30104)

SCREW, HHFS

M12-1.75X30 MM

GR8.8 PATCH

(P/N 23305)

TORQUE TO

50 FT-LBS

(68 N·m)

ENGINE

CRADLE

BEARING

BLOCK

CROSS

SHAFT

ENGINE

CRADLE

SCRIBE

MARKS

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 7 OF 12

Cross Shaft Alignment

See Figure 13.

1. Install gauge sleeve onto cross shaft.

2. Install gauge body onto stub shaft. Torque alignment

bolt to 20 lbf·ft (27.1 N·m).

3. Measure the distance between the gauge pin and

gauge sleeve with a feeler gauge. This distance is an

indication of the number of shims that will be required.

Figure 13. Cross Shaft Alignment

4. Rotate gauge arm and remove gauge sleeve. Install

shims as required.

5. Reinstall gauge sleeve onto cross shaft. Insert

0.032" feeler gauge (Figure 14) between gauge pin

and gauge sleeve.

GAUGE

BODY

GAUGE

SLEEVE

CROSS

SHAFT

GAUGE

ARM

ALIGNMENT BOLT

TORQUE TO

20 FT-LBS (27.1 N∙m)

STUB

SHAFT

NOTICE

The gauge sleeve must be held and pressed rmly

against the cross shaft bearing when using feeler gauge

to provide the most accurate measurement.

6. If 0.032" feeler gauge ts between gauge pin and

gauge sleeve, re-shim until feeler gauge will not pass

between gauge pin and gauge sleeve.

Figure 14. Shimming

Cross Shaft Removal

Unmount cross shaft using a 16mm socket while making

sure to keep shims on shaft.

Lower Pulley Installation

Refer to Figure 15.

1. Clean the cross shaft and lower pulley with brake

cleaner.

Figure 15. Lower Pulley Installation

2. Apply primer (Loctite 7649, P/N 32441) to the cross

shaft and key way in the shaded area shown in

Figure 15.

3. Using retaining compound (P/N 32434), apply to cross

shaft and key way until coverage is complete with a

minimum coating thickness of 1/16 of an inch.

FEELER

GAUGE

(.032")

ADD SHIMS

AS REQUIRED

LOWER PULLEY

(P/N 23363-2)

CROSS

SHAFT

SHIMS

APPLY PRIMER (P/N 32441) THEN

RETAINING COMPOUND (P/N 32434)

TO SHADED AREA

KEY

(P/N 20363)

O-RING

(P/N 20116)

COUPLER

(P/N 23420)

SCREW, HHFS (3)

1/4-28 X 3/4

(P/N 9165)

SCREW, FHSC

3/8-16 X 1.25 LH THREAD

(P/N 30107)

RED

LOCTITE

(LOCTITE 271

P/N 19379-014)

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 8 OF 12

4. Mount new lower pulley (P/N 23363-2) and key

(P/N 20363) onto cross shaft.

5. Inspect the existing coupler. If it has a raised area as

shown in Figure 16, retain the coupler and continue

to the next step. If it does not have a raised area as

shown, discard the coupler and use the new, improved

coupler (P/N 23420) for the next step.

Figure 16. Existing Coupler Inspection

6. Mount coupler (P/N 23420) onto lower pulley with O-ring

(P/N 20116) placed between lower pulley and coupler.

7. Secure coupler with 1/4-28 × 3/4" screws (P/N 9165).

8. Clean the threads of 3/8-16 × 1.25" LH thread

retaining screw (P/N 30107) with brake cleaner. Apply

primer (Loctite 7649, P/N 32441) then Red Loctite

(P/N 19379-014) to the threads.

9. Insert 3/8-16 × 1.25" LH thread retaining screw

(P/N 30107) into cross shaft.

10. Once lower pulley has been mounted to shaft, wipe

away any and all retaining compound.

RAISED

SECTION FLAT

DISCARD

RETAIN

NOTICE

When changing to the new coupler, the spacer

(P/N 30110) is no longer required.

NOTICE

Mounting screws will not be torqued until after

the Right-Side CV Axle Assembly is reinstalled/

reconnected.

NOTICE

It is extremely important that this unit must not be

run for a period of at least 24 hours. The retaining

compound needs to cross link and become completely

cured during this time period.

Cross Shaft/Lower Pulley Installation

1. Remount cross shaft (with lower pulley assembly) onto

engine cradle. Refer to “Cross Shaft Mounting”section

and Figure 11.

2. Place the CVT belt over the lower pulley. Do not attempt

to squeeze the belt into the pulley groove yet.

CV AXLE REINSTALLATION/RECONNECTION

Before reinstalling the CV axle assemblies, ensure rubber

boots are not cracked or worn (Figure 17). If boots are

damaged, replace immediately. If CV axle assembly is dirty

or covered with debris, clean with a mild soap or solvent.

If necessary, grease CV axle as required.

Figure 17. CV Boot Inspection

Right-Side CV Axle

1. Apply a thin coat of RTV silicone (Figure 18) to mating

surfaces of CV axle assembly.

Figure 18. Applying RTV Silicone

2. Connect right-side CV axle assembly to cross shaft

coupler and right-side gearbox coupler (if applicable).

3. Torque CV axle mounting screws to 12 lbf·ft (16.3 N·m).

NOTICE

Make sure to align both bearing blocks with scribe marks

on engine cradle. See Figure 12.

CV BOOT

TORN

CRACKED

RTV

SILICONE

APPLY SILICONE

TO CV-JOINT

MATING SURFACES

RTV

SILICONE

NOTICE

Before connecting left-side CV axle assembly, torque

lower pulley mounting screws. See “Lower Pulley

Mounting Screw Torquing” section.

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 9 OF 12

Lower Pulley Mounting Screw Torquing

See Figure 19.

Figure 19. Lower Pulley Mounting Screw Torquing

1. Torque 1/4-28 × 3/4" screws (3) to 10 lbf·ft (13.6 N·m).

2. Torque 3/8-16 × 1.25" LH thread retaining screw to

31 lbf·ft (42 N·m).

Left-Side CV Axle

1. Apply a thin coat of RTV silicone (Figure 18) to mating

surfaces of CV axle assembly.

2. Connect left-side CV axle assembly to left-side gearbox

coupler and lower pulley.

3. Torque CV axle mounting screws to 12 lbf·ft (16.3 N·m).

PARTIAL REASSEMBLY / LOWERING TROWEL

The trowel must be lowered back to the ground prior to

fully installing the belt and upper clutch. To gain access

to lifting points, perform the following procedure. Refer to

Figure 2 and Figure 5.

1. Reinstall rear engine panel with existing mounting

bolts (2).

2. Rotate right-side seat frame back to vertical position

and secure to rear engine panel with existing mounting

bolts (2).

3. Rotate left-side seat frame back to vertical position.

Temporarily secure to rear engine panel with existing

mounting bolts. DO NOT overtighten, as left-side seat

frame will need to be rotated back to horizontal position

after trowel is lowered to the ground.

4. Lower trowel onto the ground. Follow all heavy lifting

safety precautions.

5. Once trowel is on the ground, remove left-side

mounting bolts and rotate left seat frame to horizontal

position.

LOWER PULLEY

SCREW, HHFS (3)

1/4-28 X 3/4

(P/N 9165)

SCREW, FHSC 3/8-16 X 1.25

LH THREAD

(P/N 30107)

TORQUE TO

31 FT-LBS

(42.03 N·m)

TORQUE TO

10 FT-LBS

(13.6 N·m)

LOWER PULLEY BELT INSTALLATION

With the CVT belt placed over the lower pulley, squeeze

the belt (Figure 20) and pull the belt upwards and towards

the rear of the trowel. This will spread open the faces of

the lower pulley.

Figure 20. Holding Lower Pulley Open

UPPER PULLEY BELT INSTALLATION

1. While holding the clutch, place free end of CVT belt

into upper pulley grooves (Figure 21).

Figure 21. Upper Pulley Belt Installation

PULL UPWARDS

AND TOWARDS

REAR OF TROWEL

FIXED

FACE

LOWER

PULLEY

CVT BELT

(P/N 23365)

MOVABLE

FACE

NOTICE

DO NOT use a pry bar to open the lower pulley grooves.

This can cause damage to the lower pulley.

CLUTCH

(P/N 23363-1)

UPPER

PULLEY LOWER

PULLEY

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 10 OF 12

2. Once CVT belt has been placed into upper pulley

grooves, mount clutch assembly onto stub shaft using

7/16-20 × 6.5" clutch retaining screw (Figure 22).

Figure 22. Installing Clutch Assembly

3. Clean the threads of the clutch retaining screw with

brake cleaner.

4. Apply primer (Loctite 7649, P/N 32441) then apply

Blue Loctite #242 (P/N 1477) to clutch retaining screw.

See Figure 22.

5. Torque clutch retaining screw to 45 lbf·ft (61 N·m).

CVT

BELT

STEP

WASHER

(P/N 23369)

SCREW, HHC

7/16-20 X 6.5"

(P/N 23377)

TORQUE TO

45 FT-LBS

(61 N∙m)

STUB

SHAFT

NOTICE

Wedge a 2 × 4 block of wood between ywheel and

trowel frame to prevent ywheel rotation so clutch

retaining screw can be fully tightened.

REASSEMBLY

1. Rotate left-side seat frame back up to vertical position

and secure with existing mounting bolts.

2. Secure choke cable to rear engine panel with cable tie.

3. Rotate seat down to operating position.

4. Reinstall fuel tank onto trowel frame using existing

mounting hardware.

5. Reconnect fuel lines and electrical connections as

referenced in Figure 8. Turn fuel shut-off valve to the

ON position. If previously drained, rell with fuel.

6. Unlock spider assemblies.

7. Reinstall battery and reconnect battery cables —

RED to the positive terminal, BLACK to the negative

terminal.

8. Reinstall side guards (Figure 3).

9. Reinstall right seat frame side panel (Figure 5).

10. Reinstall splash guard (Figure 6).

11. Tighten air intake hose clamp (Figure 5).

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