D SERIES
OM-01510
MAINTENANCE & REPAIR
PAGE E - 14
NOTE
The pinion gear is a tight interference fit on the pin
ion shaft. To ease installation, the gear may be
heated (and the shaft cooled) to a temperature dif
ferential of 350
_
F (177
_
C). If the gear is heated,
use
caution
when handling the gear to prevent burns.
Slide the assembled pinion shaft and gear into the
pinion shaft bushing until fully seated.
Slide the crankshaft and assembled bearing (2)
into the gear housing and secure with the snap ring
(36).
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Install the crankshaft gear key (8) in the shaft key
way. Align the crankshaft gear teeth with those on
the pinion shaft, and press the gear onto the crank
shaft until fully seated against the shoulder. Install
the spacer (31), and press the bearing (9) onto the
shaft until fully seated against the spacer.
Tap the end of the crankshaft with a soft‐faced mal
let to ensure that all components are fully seated.
If removed, press the pinion shaft bushing (13) into
the gear cover (7). Slide the pinion shaft washer
(12) onto the pinion shaft (28). Install the gear
housing gasket (4). Position the gear cover so that
the respective bores slip over the crankshaft bear
ing and pinion shaft. Tap the cover into place with a
soft‐faced mallet.
Install the two close‐tolerance shoulder bolts (40
and 47) (which act as pilots to ensure accurate
concentric positioning of the cover) through their
respective holes, and secure them with the hard
ware (41, 42, 48 and 49). Secure the gear cover to
the gear housing by tightening the remaining hard
ware (37, 38, 39, 43, 44, 45 and 46) evenly.
Install the gear cover plug (14) and the gear hous
ing plug (29).
Press the drive shaft and assembled bearings into
the eccentric housing (20), and secure with the re
taining ring (24).
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Lubricate the lip of the oil seal (19) with light oil, and
position it on the drive shaft with the lip positioned
as shown in Figure 4. Press the oil seal into the ec
centric housing bore until the face of the oil seal is
just flush
with the face of the eccentric housing.
Be careful
not to roll or cut the lip of the oil seal on
the shaft keyway.
Install the drive gear (25) on the drive shaft, and se
cure with the snap ring (26).
Clean the mating surface of the eccentric housing
and replace the eccentric housing gasket (21). Po
sition the assembled eccentric housing and drive
shaft in the gear cover bore with the word “top” on
the eccentric housing flange facing up. Slide the
housing and drive shaft into the gearbox, making
certain the drive gear teeth fully engage those of
the pinion gear. Secure the eccentric housing to
the gear housing with the hardware (15 and 16).
Install the drive shaft key (17).
(Figure 1)
Position the gearbox on the base (7). Position the
diaphragm ring (23) under the base, and secure
the gearbox and diaphragm ring with the hardware
(29 and 30).
If the drawbar (24) was removed, secure it to the
diaphragm ring with the U‐bolts (35) and hardware
(36 and 37).
Secure the drive shaft coupling (1) to the drive
shaft. Check the coupling alignment as described
in
ALIGNMENT
, Section B. Install the coupling
guard (4) and secure it with the hardware (19, 20,
21 and 22).
Lubricate the gearbox as described in
LUBRICA
TION
.
