TM 9-4520-251-14
4-37 PRIMER PUMP (CONT)
Location/Item
Action
Remarks
2. Primer pump
Operate knob (3)
and observe
gasoline entering
preheater box.
Release push
button petcock
(2).
REPAIR
3.
Primer pump
4.
Knob
REMOVAL
Check air cyl-
inder (4) for
loose mounting.
Tighten nut (5)
if needed.
Check knob (3) for
looseness. Tighten
setscrew (6) if needed.
Gasoline used in operating this heater is explosive.
Avoid open flame near spilled or drained gasoline.
Make sure a wheeled Class 20-B:C fire extinguisher is in easy reach.
Dispose of waste gasoline in a safe manner.
5.
Primer tube
Disconnect primer tube (7) at tube nut (8).
6.
Knob
Loosen setscrew (6) and remove knob (3).
7. Air cylinder
Remove nut (5) to detach air cylinder (4)
from bracket plate (9).
8. Adapter body
Remove assembled adapter body (10) and
and elbow
(11) from air cylinder (4).
4-86
