Drive Shaft Maintenance; Drive Shaft Removal - JLG sky trak mmv Service Manual

Transfer Case and Drive Shafts
6.4.2

Drive Shaft Maintenance

Information regarding the lubrication of the grease fittings
on the drive shafts is located in Section 2.6.3, Lubrication
Points (Grease Fittings) .
6.4.3

Drive Shaft Removal

IMPORTANT: To help ensure optimum performance, the
drive shaft assemblies are specially balanced as a unit at
the factory. When servicing any flange yoke, slip yoke, or
drive shaft tube, order a complete assembly if compo-
nents are bent or damaged. Refer to the appropriate parts
manual for ordering information.
Note: The drive shaft assemblies are balanced assem-
blies. Mark the yoke and axle, transmission, transfer
case, and the shaft and slip yoke so that these compo-
nents can be returned to their original positions when
reinstalled. Yokes at both ends of the drive shaft must be
in the same plane to help prevent excessive vibration.
a. Transfer Case-to-Axle Drive Shafts
1. Level the vehicle, ground the carriage, place the travel
select lever in the [N] NEUTRAL position, place the
neutral lock lever in the [N] NEUTRAL LOCK
position, engage the parking brake switch and shut
the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition switch and steering wheel, stating that the
vehicle should not be operated. (Refer to Section
1.5, Accident Prevention Tag Usage .)
3. Open the engine compartment cover. Allow the
engine, transmission and hydraulic fluid to cool.
2
1
3
6.8
6
5
4
MM2911
4. Remove engine side battery box cover (1). Remove
wing nuts (2) and carriage bolts (3) and set cover
and mounting hardware aside for later re-assembly.
5. Disconnect the negative (-) battery cable (4) at the
negative (-) terminal on the battery in the engine side
battery box.
6. Disconnect the negative (-) cable (5) at the bottom of
the battery equalizer (6).
7. Remove the four capscrews (7) and two straps (8)
securing the bearing crosses to the transfer case (9).
8. Remove the four capscrews (10) and two straps (11)
securing the bearing crosses to the rear axle (12).
9. Remove the drive shaft assembly (13).
12
b. Transmission-to-Transfer Case Drive Shaft
1. Level the vehicle, ground the carriage, place the travel
select lever in the [N] NEUTRAL position, place the
neutral lock lever in the [N] NEUTRAL LOCK
position, engage the parking brake switch and shut
the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition switch and steering wheel, stating that the
vehicle should not be operated. (Refer to Section
1.5, Accident Prevention Tag Usage .)
3. Open the engine compartment cover. Allow the
engine, transmission and hydraulic fluid to cool.
4. Remove engine side battery box cover (1). Remove
wing nuts (2) and carriage bolts (3) and set cover
and mounting hardware aside for later re-assembly.
5. Disconnect the negative (-) battery cable (4) at the
negative (-) terminal on the battery in the engine side
battery box.
13
9
8
7
10
11
MM22502
Model MMV Rev. 12/04