(2) Remove water pump from front blower (para
3-14. Blower (supercharger) for Engine Model 687C-
a. General. Two blowers are mounted on left side
of engine. Each furnishes air to three cylinders through
(4) Remove blower adapters (TM 5-3810-206-
adapters. The rear blower is coupled to and driven by
the accessory drive. Rear blower is coupled to and
drives front blower, which in turn drives the water pump.
that secure front blowers to engine (10, fig. 3-14). Slide
Both are disassembled and reassembled in a similar
front blower (1) to left approximately two inches,
manner. This paragraph will describe handling of front
uncouple it from rear blower (6), then remove front
blower, showing differences between blowers in
b. Removal and Installation.
(1) Disconnect and remove external oil and
drain lines from front and rear blowers (TM 5-3810-206-
(7) Loosen hose clamp from boot over coupling
at accessory drive.
Oil drain line
Nut (2 rqr)
Tube nut (2 rqr)
Hand hole cover (6 rqr)
Hose clamp (2 rqr)
Capscrew (6 rqr)
Boot blower coupling
Lockwasher (6 rqr)
Figure 3-14. Blowers, removal and installation.