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Gearbox bench procedures consist of removal and replacement procedures of all gearbox com-
ponents (with the exception of pump shafts and gear ratios). Gearbox bench procedures are
identical for all four Flex series single stage pumps once the pump has been removed from the
gearbox. All of the subparagraphs in this section (bench procedures) provide removal and re-
placement procedures for selected Gearbox components and apply to all four booster pumps.
Figure 24 and Figure 25 show exploded views of the Gearbox.
When the bench procedure(s) is (are) completed, the pump portion (assemblies) must be rein-
stalled on the gearbox before the unit can be reinstalled on the apparatus. Use the
General
Gearbox Installation portion of paragraph 5.9.1 to install the pump assemblies onto the gearbox.
After assembling the pump to the gearbox reinstall the unit on the apparatus, use para-
graph 5.8.8 for instructions to reinstall the unit on the apparatus.
5.9.2.1 Input Shaft
This procedure requires gearbox removal prior to performance to provide input shaft access. See
the previous paragraph for references to remove the unit from the apparatus and then the pump
assemblies from the gearbox. Refer to Table 41 for a list of tools and/or consumables required
for this procedure.
Table 41. Input Shaft Bench Procedure Tools And Consumables List
PPE (Eye and Hand Protection) None Shop Rag(s) (As Required)
PPE (for Handling Oil) Loctite 680
Bearing And Seal Drivers
(90 and 95 mm)
Ø 1.5-in (38 mm) Wood Dowel
(Between 8-in [200 mm] and 12-in [305 mm] long)
Oil Safe Catch Container
(1.5 L or larger)
Endcap 90 mm
<See FSG–PL–01481, Sheet 2, Item 26>
Seal Removal Tool Oil Seal (Input Shaft)
<See FSG–PL–01481, Sheet 2, Item 2>
Snap Ring Pliers Bearing (Qty = 2)
<See FSG–PL–01481, Sheet 2, Item 4>
Non-marring Hammer Input Shaft
<See FSG–PL–01481, Sheet 2, Item 5>
Shop Hammer Gear Oil (See FSG–MNL–00183, Flex Series Single
Stage Booster Pump OIM, paragraph 7.4.4.1.1.)
Press (Mechanical or Hydraulic)
Steel Rod (Short Length of Approximately 1/2-in)
9/16-in Wrench (or 8 pt. socket)
Ratchet
10 mm Hex Socket
Slide Hammer and Puller Set
Chisel (Long Thin)
* Optional.
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