4-36. CHEMICAL INJECTION PUMPS. This task covers
Tools, see Appx B, Sec Ill, Ref Code (No.):
Tool Kit, General Mechanics Automotive (1)
Stripper, Wire (16)
Crimper, Hand Terminal (16)
Insertion Tool Kit (16)
Extraction Tool Kit (16)
General Safety Instructions:
Observe specific Warnings in the text
Guide Pin Kit (16)
Crimper, Hand, Connector (16)
Chemical Pump Repair Kit from
ROWPU Storage Box No. 2
M a t e r i a l s / P a r t s :
Ties, Wire (Appx E, Sec II, Item 71)
Detergent (Appx E, Sec II, Item 15)
Container for Chemicals
Lockwashers (TM 10-4610-232-24P)
Washers (TM 10-4610-232-24P)
Make sure electrical power is disconnected before working on unit. Failure to do so
could result in serious injury or death from electrical shock or moving parts.
To avoid injury, always wear protective clothing when working on or near the
chemical metering pump. Make sure all tubing connections are secure before
Tag tubing before disconnecting from pump.
Power cable P51 connects to hypochlorite pump, power cable P50 connects to the
polyelectrolyte pump, and power cable P49 connects to sequestrant pump.
CUt tie wraps that secure cable to wall (para. 4-10).
Disconnect power cable connector (1, Figure 4-40, sheet 1) from main harness.
Disconnect chemical tubes (2 and 3) by unscrewing nuts (4 and 5).
Remove four screws (6), washers (7), two brackets (6A), four nuts (8), washers (9A), and lockwashers (9).
Remove chemical pump assembly (10).
4-162 Change 2