Pump Relay

TM 10-3930-609-35

b. Installation.

(1) Connect lead NEG to moving contact

support on master switch relay, being sure to include lug

(1) Aline mounting holes in fuse holder with

of coil lead at same terminal.

holes in fuse panel and secure fuse holder with screws.

(2) Connect lead 91 to other coil terminal.

(2)

Reconnect leads (disconnected during

(3) Connect lead MP1-1MS to stationary

disassembly) to screw-type fuse terminals.

contact support.

(3) Reconnect battery jumper to bus bar on

(4) Aline mounting holes in base of relay with

right side of fuse holder.

tapped holes in mounting panel; and, secure relay to

(4) Reinstall cover (TM 10-3930-609-12).

panel with three capscrews, lockwashers, and

flatwashers.

2-26. Pump Relay

(5) Reinstall cover on control panel

a. Removal.

compartment (TM 10-3930-609-12).

(1) Remove cover from control panel

compartment (TM 10-3930-609-12).

2-28. Accelerator Relay

(2) Remove capscrews, flatwashers, and

a. Removal.

lockwashers which secure base of pump relay (fig. 2-14)

(1) Remove cover from control panel

to mounting panel; then, withdraw relay for access to

compartment (TM 10-3930-609-12).

terminals.

(2) Remove capscrews, lockwashers and

(3) Disconnect leads NEG, MP1-1MS, 13A2,

flatwashers which secure base of accelerator relay to

13A-3 and 13A-4 from contact support on pump relay.

mounting panel (fig. 2-14). Withdraw relay slightly from

(4) Disconnect lead MP1-A2 from relay

panel for access to terminals.

frame.

(3) Disconnect leads 77 and leads 41 from

(5) Disconnect leads 13A and 80 from relay

relay coil terminals.

coil terminals.

(4) Disconnect leads NEG from relay moving

(6) Withdraw pump relay from compartment.

contact support.

b. Installation.

(5) Disconnect leads T2 and T2-1 from

(1) Connect two 13A leads and lead 80 to

stationary contact support.

screw-type terminals on relay coil.

(6) Disconnect leads 45 from terminal B on

(2) Connect lead MP1-A2 to relay frame; and,

relay interlock switch.

connect leads NEG, MP1-1MS, 13A-2, 13A-8 and 13A-4

(7) Withdraw

accelerator

relay

from

to front contact bracket on relay.

compartment.

(3) Aline mounting holes in relay base with

b. Installation.

holes in mounting panel, and secure relay in place with

(1) Connect two leads 45 to terminal B on

three cap screws, lockwashers, and fiat washers.

accelerator relay interlock switch.

(2) Connect leads T2 and T2-1 to stationary

2-27. Master Switch Relay

contact bracket on relay.

a. Removal.

(3)

Connect two NEG leads to moving

(1) Remove cover from control panel

contact bracket on relay.

compartment (TM 10-3930-609-12).

(4) Connect two leads 77 to one coil terminal

(2) Remove capscrews, lockwashers, and

and connect two leads 41 (one lead 41 is also connected

flatwashers which secure base of master switch relay to

to the interlock switch) to the other coil terminal.

mounting panel (fig. 2-14); then withdraw relay from

(5) Aline holes in base of relay with tapped

mounting panel for access to terminals.

holes in mounting panel; and, secure relay to panel with

(3) Disconnect lead MP1-LMS from stationary

three cap screws, lockwashers and flatwashers.

contact support, disconnect lead 91 from relay coil

(6)

Reinstall cover on control panel

terminal, and disconnect lead NEG from moving contact

compartment (TM 10-3930-609-12).

support.

(4) Withdraw master switch relay from

2-29. Forward and Reverse Relay

compartment.

a. Removal.

b. Installation.

(1) Remove cover from control panel com-

2-21