Kohler command pro CH940 Service Manual page 81

Install Cooling Fan and Debris Screen (Style A)
Failure to utilize or reassemble debris screen
as designed could result in debris screen
failure and serious personal injury.
1. Position cooling fan onto flywheel aligning mounting
locations. Apply a small amount of Loctite
Threadlocker to threads and install long mounting
screws. Torque screws to 10.4 N·m (92 in. lb.).
2. Apply a small amount of Loctite
to external threaded section, (unless new parts with
preapplied locking compound are being used).
Thread debris screen hex studs into mounting holes
in flywheel. Torque each stud to 21.5 N·m
(190 in. lb.).
3. Install stiffener followed by metal debris screen onto
studs. Secure with special washers and mounting
screws using Loctite
®
threads. Torque hex flange screws to 20.3 N·m
(180 in. lb.) and button head cap screws to 9.9 N·m
(88 in. lb.).
62 690 01 Rev. J
CAUTION
243™
®
243™ Threadlocker
®
243™ Threadlocker on
KohlerEngines.com
Install Metal Debris Screen (Style B)
Spring Washer Details
A
A
Spring Washer
E
D
C
A Metal Debris Screen
C
Flywheel
E Hex Bolt
1. Verify locating tabs on back of fan are inserted into
locating holes on flywheel.
2. To assist assembly, find intake manifold studs with
M6 thread at least 100 mm in length to be used as
guide pins. Insert intake manifold studs through
cooling fan mounting holes and thread them 4 or 5
turns into flywheel.
3. Install a spring washer on each stud with concave
side down toward cooling fan.
4. Install a spacer on each stud with stepped end
down. Smaller diameter should extend through
spring washer and fan, so tip is resting on flywheel,
and shoulder is resting on spring washer
5. Install support ring on studs, so it is resting on
spacers. Then install metal screen on top of support
ring.
6. Install a plain washers on each of screws. Apply
Loctite 242 to screw threads.
® ®
7. Carefully remove studs and replace with screws.
Torque screws to 9.9 N·m (88 in. lb.). Repeat
procedure for other studs and screws.
Reassembly
A
B
B Fan
D
Spacer
81