MCi Crusader II 1989 Maintenance Manual page 214

Date
1-1-89
Page _. __
e_-1_s __
MC-9 MAINTENANCE MANUAL
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,, 20
12
1. Housing 9. Output Shaft Spacer
17. Output & Input Shaft Oil Seal
2. Cover 10. Spiral Bevel Pinion
18. Input
&
Output Shaft Key
3. Bearing Carrier 11. Spiral Bevel Gear 19. Pipe Plug
4. Bearing Carrier Shim
12.
Bearing Cone 20. Key
5. Shaft Cover 13. Bearing Cup
21. Housing
& Shaft Cover Stud
6. Shaft Cover Shim
14. Retaining Ring 22. Stop Nut
7. Input Shaft
15. Shaft Cover O-Ring 23: Socket Head Capscrew
8. Output Shaft
16. Bearing Carrier O-Ring
Figure 6-20. Blower Gear Box Component Parts.
BLOWER BELT AIR CYLINDER
An air operated blower belt adjusting cyhnder is installed to
ensure the correct tension on the blower gear box drive belt.
Access to the air cylinder can be gained through the rear
engine compartment
ser·✓ Ice
doors. See figure 6-21.
ADJUSTMENT
To maintain the correct tension on the blower belt. the air
cyI1nder must be properly ad1usted \ivith the air system under
normal pressure and the pressure regulating valve set at 21 psi
i144.8 kPa). the shaft length must be 1¼"z
'la''
(31.7 mmz3.1
mmJ. as shown in figure 6-21
11 the snaft Is not within these tolerances. adjust the cylinder
as follows:
1 Loosen the 1am nut on the shaft end of the cylinder.
2 Rotate the shaft to attam the specified length
3. Tighten the 1am nut.
NEW BELTS
When a new blower dnve belt 1s installed. it may be difficult to
Figure 6-21. Belt Air Cylinder Adjustment.
attain the specified shaft length on the air cylinder. The drive
belt stretches with normal wear. and after approximately 500
miles 1800 km) the shaft length should return to 1 ¼" ..:!:.. 1/e'' (31.7
mm.!.3.i mm).
At the end of this run-in period the shaft length should be
checked and. it necessary. adjusted.