KIT-PISTON SEAL 3750732 - Caterpillar

Control Panel
(1) ACM (AC meter module). (2) ALM (alarm module) optional. (3) ECM (engine control module). (4) VAR (voltage adjust rheostat). (5) Switch (display hold switch). (6) PLS (panel light switch) optional. (7) ESPB (emergency stop push button) optional. (8) ECS (engine control switch. (9) SP (speed adjust potentiometer) or GS (governor switch) optional. (10) AVS (ammeter - voltmeter phase selector switch). (11) LTS (lamp/display test switch). (12) ALS (alarm silence push button). For location and specifications on components located on the engine, make reference to the respective Engine Service Manual.
Components On The Back Of ECM (3) (13) Fuses (F1 through F8). (14) Switch (overspeed verify).
Control Panel (Rear View)
(1) ACM (AC meter module). (2) ALM (alarm module) optional. (3) ECM (engine control module). (4) VAR (voltage adjust rheostat). (6) PLS (panel light switch) optional. (7) ESPB (emergency stop push button) optional. (8) ECS (engine control switch). (9) SP (speed adjust potentiometer) optiona. (10) AVS (ammeter-voltmeter phase selector switch). (11) LTS (lamp/display test switch). (15) PL2 (panel illumination light) optional. (16) D2 (diode). (17) D1 (diode). (18) GS (governor switch) optional. (19) PL1 (panel illumination light) optional. There are two subpanels (Subpan Side 1 and Subpan Side 2). They are located behind the Control Panel.
Component Layout (Subpan Side 1)
(20) Fuses (F11 through F13). (21) TS (terminal strip). (22) TS (terminal strip). (23) 2301 (electronics governor speed control) optional. (24) TBC (terminal board C). (25) TB1 (terminal board 1). (26) F9 (fuse) installed if optional PR is not provided. (27) AUX (auxiliary relay, crank termination) optional. (28) Fuse. (29) PR (pre-regulator) optional.
Component Layout (Subpan Side 2)
(30) SMMS (starting motor magnetic switch). (31) SBM (series boost module) optional. (32) CB (circuit breaker). (33) VR (voltage regulator).