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6.4 Reassembly
6.4.1 Assemble the power end- XHD, oil lubrication
NOTICE:
Do not use a flame to heat bearings. Doing so will damage the bearing surfaces.
1.
Install the bearings onto the shaft (items 346A grease shields shown below are for grease lube on-
ly):
a) Use an induction bearing heater to heat the bearings to approximately 121ºC | 250ºF . This ex-
pands the bearings to ease their installation on the shaft.
b) Install the inboard and outboard taper roller bearings (409 and 410) onto the shaft (122) in a
face-to-face orientation.
c)
Push the inner races firmly against the shaft shoulders until the bearings cool and are locked
into place.
410
346A
122
346A
409
Figure 100: Installation of bearings onto shaft
2.
Lubricate and install the spacer sleeve o-rings (512D) into the spacer sleeve (157).
3.
Slide the spacer sleeve (157) onto the inboard end of the shaft (122) until it is flush with the inner
race of the inboard taper roller bearing (409). Use care when sliding the spacer sleeve onto the
shaft to prevent o-ring damage.
4.
Coat the outside bearing races with oil to ensure they float in the frame.
5.
Insert the inboard labyrinth seal (333A) into the inboard bearing cover (119).
6.
Lubricate the inboard bearing cover o-ring (412) and insert into the inboard bearing cover (119).
7.
Insert the Bellville preload washer (529) into the inboard end of the bearing cartridge housing (228)
so it is in contact with the inboard taper roller bearing (410).
8.
Slide the inboard bearing cover (with Inpro seal and o-ring attached) into the bearing cartridge
housing (228) carefully to avoid o-ring damage.
9.
Secure the inboard cover assembly to the bearing cartridge housing (228) using the hex head cap
screws (370P).
228
412
119
370P
Figure 101: Secure inboard cover assembly
10. Slide the bellville washer (529) and outer race of the inboard bearing (409) into position inside the
bearing frame (228).
6.4 Reassembly
XHD Installation, Operation, and Maintenance Manual
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