MULTIQUIP HHX User manual

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
19
8
10
6
7
B
A
2
12
4
RED
LOCTITE
11
BLUE
LOCTITE
5
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
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
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
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
PIN
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
OR
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).

HHX — CROSS SHAFT AND DRIVE PULLEY INSTALLATION INSTRUCTIONS P/N 32437 — REV. #2 (08/24/23) — PAGE 11 OF 12
NOTES

HHX CROSS SHAFT AND DRIVE PULLEY INSTRUCTIONS
HERE’S HOW TO GET HELPHERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
© COPYRIGHT 2023, MULTIQUIP INC.
Multiquip Inc
,
the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property
of their respective owners and used with permission.
This manual
MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifi cations included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifi cations, design or the information published
in this publication at any time without notice and without incurring any obligations.
UNITED STATES
Multiquip Inc.
(310) 537- 3700
6141 Katella Avenue Suite 200
Cypress, CA 90630
E-MAIL: [email protected]
WEBSITE: www.multiquip.com
CANADA
Multiquip
[phone]
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
E-MAIL: [email protected]
UNITED KINGDOM
Multiquip (UK) Limited Head Offi ce
0161 339 2223
Unit 2, Northpoint Industrial Estate, Globe Lane,
Dukinfi eld, Cheshire SK16 4UJ
E-MAIL: [email protected]