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Printed in U.S.A.
4-22
918070/FP0811
Checking and Adjusting V-Belt Tension
1. Position the machine on a level surface.
2. Lower the bucket and dozer blade to the ground.
Move the joysticks in all directions to verify the
hydraulic system is de-pressurized.
3. Shut off the engine. Remove the ignition key and
take it with you. Lock-out the controls by raising
left control console.
4. Wait for the engine to cool and open the engine
cover and carefully inspect the V-belt (1) for dam-
age. If the V-belt (1) is damaged, have it replaced
by your dealer.
5. Press on the center of a span on the V-belt to check
deflection. The belt deflection should be no more
than 5/16” (8 mm). See Figure 4-19.
6. If deflection is more than 5/16” (8 mm):
a. Loosen adjustment bolt (2) and rotate the alter-
nator (3) in the direction of the arrow until
reaching the correct V-belt tension.
b. Tighten adjustment bolt (2) and re-check V-
belt tension. Close the engine cover when fin-
ished.
Figure 4-19 Checking & Adjusting V-belt
Tension
Checking and Adjusting Air
Conditioning V-Belt Tension
1. Position the machine on a level surface.
2. Lower the bucket and dozer blade to the ground.
Move the joysticks in all directions to verify the
hydraulic system is de-pressurized.
3. Shut off the engine. Remove the ignition key and
take it with you. Lock-out the controls by raising
left control console.
4. Wait for the engine to cool and open the engine
cover and carefully inspect the V-belt (1) for dam-
age. If the V-belt (1) is damaged, have it replaced
by your dealer.
5. Press on the center of a span on the air conditioning
V-belt to check deflection. The belt deflection
should be no more than 11/32” (9 mm). See Figure
4-20.
6. If deflection is more than 11/32” (9 mm):
2
approx. 5/16” (8 mm)
3
1
Summary of Contents for 503Z
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