IMT DA435HAR, User Manual, Page: 23 / 34

DA435HAR: 99900683: 5-3
NOTE
THE CRANKSHAFT SHOULD HAVE NEW BEARINGS
INSTALLED. IF NOT, PRESS THE NEW BEARINGS
INTO POSITION ON THE CRANKSHAFT.
10. Generously oil the front bearing race and install
the front bearing housing with gasket. Torque the
bolts to 180 in-lbs. Torque the bolts as shown in the
pattern below.
11. Slide the crankshaft into the crankcase.
Generously lubricate the bearing race and install the
rear bearing housing and gaskets.
NOTE
GASKET KITS ARE SUPPLIED WITH TWO (2) EACH OF
.006, .010, .015, AND .020 GASKETS. USE THESE
REAR BEARING GASKETS IN ANY COMBINATION AND
QUANTITY TO LIMIT ALL PLAY FRONT TO REAR, BUT
STILL ALLOW THE CRANKSHAFT TO TURN FREELY.
12. Install the oil pump (See paragraph 5-3).
13. Install the connecting rods. Thoroughly oil the
crankshaft and rods before installing them. When
installing the rods, make certain that the tabs are
aligned on the same side of the rod as shown below.
FIGURE E-3. BEARING HOUSING
TORQUE SEQUENCE
14. Install the pistons, rings, heads and pulsation
tank.
FIGURE E-4. ROD ALIGNMENT
19950918
5-5. CLUTCH REPLACEMENT
CAUTION
CLUTCH FAILURE MAY BE DUE TO A LEAKING CHECK
VALVE. MAKE CERTAIN THAT THE CHECK VALVES
ARE FUNCTIONING PROPERLY BEFORE INSTALLING
THE NEW CLUTCH. THE CHECK VALVES MAY BE
CHECKED BY PRESSURIZING THE TANK AND
SHUTTING OFF THE COMPRESSOR. THERE SHOULD
BE NO AIR ESCAPING FROM THE UNLOADER VALVE.
IF THERE IS AIR ESCAPING, THE CHECK VALVES ARE
FAULTY.
The clutch assembly can be removed while the
compressor is still on the vehicle. The following
procedure should be used.
WARNING
ATTEMPTING TO START THE ENGINE WHILE THE
CLUTCH IS BEING REMOVED WILL CAUSE SERIOUS
INJURY.
1. Turn on the ignition switch, and move the
compressor switch to the on position. This will
engage the clutch, and make for easier removal.
2. Remove the bolt in the center of the pulley and
insert a 5/8-11 bolt.
3. Tighten the 5/8-11 bolt until the pulley is forced
off the crankshaft.
4. Loosen the drive belt and remove the
pulley.
NOTE
IF THE DRIVE BELT IS LOOSENED BEFORE THE
PULLEY IS LOOSE, IT WILL BE DIFFICULT TO HOLD
THE PULLEY STATIONARY WHILE TIGHTENING THE
5/8-11 BOLT.
CAUTION
DO NOT USE A WHEEL PULLER ON THE OUTER RIM
OF THE PULLEY. THIS CAN RESULT IN DAMAGE TO
THE CLUTCH BEARING.
5. Remove the four (4) bolts holding the coil
assembly to the front of the compressor.