131
Drive Gear Installation
A. Install drive gear.
Place gearbox flat on stable work surface with input side up. 1.
Place drive gear inside gearbox. 2.
B. Install input shaft IAW paragraph 5.9.2.1 (on page 121).
C. Install pump gear IAW paragraph 5.9.2.2.3 (on page 141).
D. Install pump shaft IAW paragraph 5.9.2.2 (on page 131).
E. Install gearbox cooling tube IAW paragraph 5.8.7.1.1 (on page 108).
Return to paragraph 5.9.2, Gearbox Bench Procedures (on page 120), for gearbox to pump (unit)
assembly and unit installation in apparatus instructions references.
5.9.2.2 Pump Shaft
Typically, a pump shaft would not require replacement during the life of a pump. However, induc-
er/impeller retaining thread damage, keyway damage, or bearing failure (typically, only a spun
bearing would damage a shaft) may result in the need to replace a pump shaft.
When the pump shaft requires replacement, performing this procedure requires removal of the
entire pump assembly from the apparatus and then pump removal from the gearbox prior to per-
formance. See paragraph 5.8.2.1 (on page 56) for pump removal from an apparatus and para-
graph 5.9.1 (on page 118) for reference to the required Gearbox R&R procedure.
Performing the removal portion of this procedure places a lot of stress on the pump shaft bear-
ings, requiring their replacement. Additionally, pump shaft installation always requires all associ-
ated gaskets, O-rings, seals, snap rings, and endcap replacement. Also, note that pump shaft
associated gearbox components vary depending on GR and pump model.
Refer to Table 45 for a list of tools and/or consumables required for this procedure.
Table 45. Pump Shaft Bench Procedure Tools And Consumables List
PPE
(Eye and Hand Protection)
Torque Wrench
(17 Nm or 12 ft-lb)
Endcap (80 mm)
<See FSG–PL-01482, Sheet 5, Item 13>(CBP)
<See FSG–PL-01483, Sheet 5, Item 13>(AP)
<See FSG–PL-01486, Sheet 5, Item 14>(MBP)
<See FSG–PL-01487, Sheet 5, Item 14>(RSD)
PPE
(for Handling Oil)
Snap Ring (Drive Side)
(Pump Shaft Retainer – All Except 3.74:1 GR)
<See FSG–PL-01482, Sheet 5, Item 12>(CBP)
<See FSG–PL-01483, Sheet 5, Item 12>(AP)
<See FSG–PL-01486, Sheet 5, Item 13>(MBP)
<See FSG–PL-01487, Sheet 5, Item 13>(RSD)
(Pump Shaft Retainer – ONLY 3.74:1 GR)
<See FSG–PL-01482, Sheet 5, Item 17>(CBP)
<See FSG–PL-01483, Sheet 5, Item 17>(AP)
<See FSG–PL-01486, Sheet 5, Item 19>(MBP)
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