Manual 2017 Rev C p/n 2017
35
08
Disassembly and Reassembly
5. If clearances check OK, put a spacer on each
shaft. Timing shims that were removed should
be put back on the shaft from which they were
removed.
6. Add keys to keyways.
7. Lubricate shafts and bores on gears. Begin
by pressing on the DRIVE gear. This will be
pressed on the drive rotor, which is to the left.
8. Start the driven gear on the shaft and align
the reference timing marks and press gear on.
Lock gears in place with socket head screw
and washer. Turn assembly over and rest the
unit on the socket head screws and washers
on the gear end, securing the unit with support
blocks.
9. Set dowel pins in housing and position housing
over the rotors and fasten with cap screws.
Check drive end clearance (see
Figure 8-13
).
A depth mic can be used.
10. Press seals into drive endplate.
11. Set on drive end plate and fasten with cap
screws.
12. Lubricate shafts and bearings. Install the
ball bearing on the driven rotor and the roller
bearing on the input shaft. Install oil slingers to
appropriate rotors.
OTE:
N
Oil slingers are on the Splash Lubrication/
Air Service models only. The Grease
Lubrication/Air Service blowers will not
have oil slingers.
13. Apply a bead of a good quality RTV silicone
sealant to the inner surface of the drive end
cover that mates to the drive end plate. Install
drive end cover and drive shaft seal.
14. Install any removed plugs and sight glasses,
and replace breather if required.
WARNING
!
Keep hands and loose clothing
away from lobes and gears.
