JLG 67SL Service Manual - Manual (Page 40)

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-8 – JLG Lift – 3121322
Motor Disassembly
NOTE: For numbers in ( ), refer to Figure 3-5., Drive Motor
(OMR 100).
1. Place the Motor Housing (2) in a holding tool with
the flange upwards.
2. Use a 13mm spanner socket to remove the screws
(13) and washers (12).
3. Remove the End Cover (11) sideways.
4. When removing the Gear Wheel Set (10) and two O-
Rings (8), keep fingers under the the gear wheel set
to prevent the parts from falling out.
5. Remove the Cardan Shaft (7).
6. Remove the Distributor Plate (9) and O-Ring (8).
7. To remove the Output Shaft (6), place the motor
housing (2) on a work bench and press the shaft out
of the motor housing.
8. Remove the Bearing Race (4) from the motor hous-
ing (2).
9. Remove the Axel Needle Bearing (5).
10. With a mandrel and plastic hammer, carefully knock
out the Shaft Seal (3) and Dust Seal Ring (1).
NOTE: When cleaning parts, clean parts carefully with low
aromatic kerosine.
Check all parts carefully and replace if necessary.
Before assembly, lubricate all parts with hydraulic oil
and grease rubber parts with vaseline.
Motor Assembly
1. Place the Motor Housing (2) in a holding tool with
the flange upwards.
2. Lubricate the Shaft Seal (3) on the outside with
hydraulic oil. Fit the shaft seal correctly onto the
mandrel and carefully press the shaft seal into posi-
tion into the motor housing.
3. Place the Dust Seal Ring (1) in the spigot flange and
knock it into position with a plastic hammer and
appropriate mandrel.
4. Fit the Bearing Race (4) onto the shaft and mount
together with the shaft.
5. Place the Axel Needle Bearing (5) back onto shaft.
6. Output Shaft (6): Grease the journals with hydraulic
oil. The rear shaft end must be marked before fitted.
The mark must be positioned vertically above a
commutation slot leading up to the front annular
channel.
7. Grease the O-Ring (8) and put it in the O-ring groove
of the housing.
8. Turn the Distributor Plate (9) so that the holes line
up.
9. Guide the Cardan Shaft (7) down into the motor
housing. In case of different splines lengths turn the
cardan shaft to ensure the long splines end is fitted
in the output shaft. Transfer marking from output
shaft to cardan shaft.
10. Place the two O-Rings (8) (greased) in the O-ring
grooves of the Gearwheel. In gearwheels with non
through splines place the gearwheel with the recess
in the spline hole facing down towards the housing.
Place the Gear Wheel Set (10) on the cardan shaft
so that the top of a tooth in the external teeth of the
gearwheel are vertically above the mark on the car-
dan shaft. Turn the gearwheel set counterclockwise
until the cardan shaft and the gearwheel start to
mesh (15°). Turn the gearwheel rim so that the holes
made for the screws line up.
11. Turn the End Cover (11) so that the holes line up.
12. Place the Washers (12) onto the Screws (13). Use a
13mm spanner socket to tighten the screws..
Table 3-3. Tightening Torques
Item Torque
Screws (item 13 in Figure 3-5.)
270 - 315 lbf in
(3.0 - 3.5 daNm)