Specifications

Preventive Maintenance 26 17730-248

AIRTEK

•

SOFTEK

for Blue Bird Buses

TIE ROD END LUBRICATION

LUBRICATION PROCEDURE

1. Turn the vehicle wheels straight ahead.

2. Wipe the zerk fitting and grease gun tip with clean shop towels.

3. Wipe the seal/boot clean with shop towels.

4. Attach a grease gun to the zerk fitting. Either a hand or pneumatic grease gun is accept-

able. If air operated grease gun is used, system air pressure should not exceed 150

psi (1035 kPa).

EXCEEDING THE MAXIMUM AIR PRESSURE TO THE ZERK FITTING CAN CAUSE DAMAGE TO THE

DUST BOOT AND COMPONENT FAILURE.

5. Dirt, water, and discolored old grease should flow from the relief vents or purge holes

near the boot crimp or bellows area, see Figure 7-3. Continue to purge grease until

fresh grease flows from the purge area.

FIGURE 7-3

6. If the tie rod end is designed for lube service and it will not accept grease proceed as

follows:

a. Remove the zerk fitting

b. Inspect the threaded zerk fitting hole in the tie rod end and remove any obstructions

c. Install a new zerk fitting

d. Continue the lubrication procedure

e. If the tie rod end will not accept grease following this procedure it will be neces-

sary to replace the tie rod end, (see Tie Rod End replacement in the Component

Replacement Section of this publication)

7. Apply grease until all the old grease is purged from the boot and fresh grease is com-

ing out.

APPENDIX

SERVICE MANUAL