Hitachi GM7000 231327 - Manual (Page 19)

308398 19
Pinion Housing
1.45 in
03475A
Fig. 10
19g**
19h**
19j**
19m**
19k
19b
19e
19d
1
3
4
2
The back of the pinion housing (19a).
Slide the pinion assembly in here.
Lubricate the exterior.
Lubricate the inner and outer diameters.
2
1
19c 3
3
4
5 Lubricate the teeth.
5
6
This is a cutaway view of the
pinion housing (19a).
6
19a
19p 19n
Repairing the Pinion
NOTE: Refer to Fig. 10 except where noted.
NOTE: A hydraulic press is required if you purchase
the pinion parts individually. Otherwise, use Repair Kit
No. 240162, which includes the shaft and bearings
pre–assembled and lubricated.
If using Repair Kit 240162, follow Steps 1 to 5, below.
1. Remove the small ring (19m**) from the hub (19j)
and the large ring (19k) from the bearing recess of
the pinion housing (19a).
2. Push on the front of the shaft (19g**) to force the
bearing and hub assembly out of the housing
(19a).
3. Install the new shaft assembly into the pinion
housing; push it to the shoulder of housing (19a).
4. Install the ring (19k) and then the ring (19m**).
5. Go to Reassembly, page 25, step 7., or continue
on page 20.
03499A
Fig. 11
A Place the steel blocks as
shown to press off the
large bearing (19h).
B Hydraulic press
C Use a round steel bar to
push on the shaft (19g)
D Position two steel bars
as shown (front bar not
shown).
E Position two steel bars
as shown.
F Platform of hydraulic
press
B C
19h
F
E
19j
D
If purchasing parts separately, use these instructions.
Disassemble as far as needed for the parts being
replaced.
NOTE: The old bearing (19h) will be damaged when
removed. Have an extra bearing on hand if you need
to remove it for any reason.
1. Remove the small ring (19m) from the hub (19j).
2. Remove the snap ring (19k) from the bearing
recess of the pinion housing (19a).
3. Push on the front of the shaft (19g) to force the
bearing (19h) and hub (19j) assembly out of the
housing.
4. Using a hydraulic press, place pieces of steel
bar stock on the inner race of the large bearing
(19h) and press the shaft through the hub and
bearing. See Fig. 11.
5. Apply lubricant to the parts as shown in Fig. 10.
6. Press fit the following parts: Large bearing (19h) to
the large shoulder of the shaft (19g). Hub (19j)
onto the shaft (19g) all the way to the large bearing
(19h).
7. Install the shaft assembly, pushing it to the shoul-
der of the housing (19a).
8. Install the snap ring (19k). Install the small ring
(19m).
9. Go to Reassembly, page 25, step 7., or continue
on page 20.