3937472 BRACKET AS Caterpillar parts
349F L
Rating:
Alternative (cross code) number:
CA3937472
393-7472
3937472
CA3937472
393-7472
3937472
Weight: 7 pounds 3 kg.
EXCAVATOR,
Compatible equipment models: 3937472:
Number on catalog scheme:
8
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Information:
Illustration 4 g03785944
(A) Hydrostatic forward drive pressure
(B) Motor lube oil from charge pump
(C) Implement charge pressure
(D) Hydrostatic reverse drive pressure
(E) Motor and pump case drain
(1) Hydrostatic pump
(3) Hydraulic filter
(9) Brake, fan, and charge pump
(10) Hydrostatic interlock solenoid valve
(11) Crossover relief valve
(12) Charge pressure relief valve
(13) Pressure tap (charge pressure)
(14) Filter bypass switch
(15) Pressure tap (charge pressure)
(16) Crossover relief valve
(17) Pressure sensor (reverse)
(18) Hydraulic tank
(19) Pressure sensor (forward)
(20) Charge accumulator
(21) Servo valve (actuator piston)
(22) Proportional solenoid valve (reverse)
(23) Proportional solenoid valve (forward)
Illustration 5 g03785948
(A) Hydrostatic drive forward pressure
(D) Hydrostatic drive reverse pressure
(E) Motor and pump case drain
(2) Hydrostatic motor
(3) Hydraulic filter
(4) Transmission
(5) Transmission oil filter
(7) Hydrostatic motor
(8) Transmission lube pump
(9) Brake, fan, and charge pump
(24) Pressure tap (transmission lube pump pressure)
(25) Transmission lube relief valve
(26) Pressure tap (transmission lube oil pressure)
(27) Clutch control proportional solenoid valve
(28) Pressure tap (Hydrostatic motor (2) clutch oil pressure)
(29) Hydrostatic motor (2) clutch
(30) Pressure tap (Hydrostatic drive forward pressure)
(31) Flushing valve
(32) Flushing relief valve
(33) Proportional solenoid valve
(34) SOS port (Hydraulic)
(35) Hydraulic oil cooler
(36) Pressure tap (Hydrostatic drive reverse pressure)
(37) Proportional solenoid valve
(38) SOS port (Transmission)
(39) Transmission oil filter bypass switch The three position Forward, Neutral, and Reverse (FNR) switch located on the joystick allows the operator to select the direction of travel. The left pedal position and right (accelerator) pedal position are monitored by the ECM. The following information describes machine functions when selecting Forward with the FNR switch after start-up.As the operator depresses the accelerator pedal, an increasing PWM signal is sent to the pump solenoid (23) to increase machine speed. When the pump nears maximum displacement, the ECM increases PWM signal to motor solenoid (33) to further increase speed. When 13 km/h (8 mph) is reached, the ECM increases PWM signal to proportional solenoid (33) to reduce the displacement of hydrostatic motor (2) to zero. The ECM reduces the PWM signal to proportional solenoid (27) to zero disengaging motor (2) clutch. The ECM now increases PWM signal as required to proportional solenoid (37) to reduce displacement of motor (7) further increasing speed.Left Pedal Operation
Left pedal input of 1% to 50% cuts back the hydrostatic drive as the following information describes. When slowing the machine from range 3 and 4 speeds, the ECM reduces PWM signal to hydraulic motor (7) to slow the machine. Motor (2) is clutched back in at 11 km/h (6.8 mph). The motor is clutched back in by the ECM sending a PWM signal to proportional solenoid (27). When motor (2) is clutched in, the ECM reduces the PWM signal to proportional solenoid (33) to increase motor (2) displacement. PWM signal to pump solenoid (23) is reduced to zero as the left pedal reaches 50%. Reducing PWM signal to pump solenoid (23) further reduces machine speed, slowing the machine to a stop. Left pedal travel of greater than 50% mechanically applies the hydromechanical service brake by actuating the hydraulic service brake valve.Travel Mode
Travel mode can be activated or deactivated in Cat ET.Travel Mode Activated With travel mode activated, no left pedal
Caterpillar parts catalog:
Parts bracket Caterpillar catalog:
2861238
BRACKET
12M 2, 12M 3, 12M 3 AWD, 140M 2, 160M 2, 2864C, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 568 FM LL, 586C, 621H, 623H, 627H, 627K, 725C, 73...
12M 2, 12M 3, 12M 3 AWD, 140M 2, 160M 2, 2864C, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 568 FM LL, 586C, 621H, 623H, 627H, 627K, 725C, 73...
3698040
BRACKET AS
349F L, 621K, 623K, 627K, 730C, 980M, 982M, C13
349F L, 621K, 623K, 627K, 730C, 980M, 982M, C13
307C, 307D, 311C, 311D LRR, 311F LRR, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 315C, 315D L, 316E L, 318C, 318D L, 318D2 L, 318E L, 319D L, 319D LN, 320C, ...
3168987
BRACKET
2290, 2390, 2391, 2491, 2590, 307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314E CR, 314E LCR, 315D L, 316E L, 318D2 L, 318E L, 319D, 319D L, ...
2290, 2390, 2391, 2491, 2590, 307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314E CR, 314E LCR, 315D L, 316E L, 318D2 L, 318E L, 319D, 319D L, ...
3467902
BRACKET AS
312D L, 312E L, 315D L, 316E L, 318E L, 319D LN, 320D, 320D L, 320E L, 324D L, 324E L, 324E LN, 328D LCR, 329D, 329D L, 329E L, 336D, 336D2, 336E L, 336F L, 345D L, 349D L, 349E L, 349E L VG, 349F L, ...
312D L, 312E L, 315D L, 316E L, 318E L, 319D LN, 320D, 320D L, 320E L, 324D L, 324E L, 324E LN, 328D LCR, 329D, 329D L, 329E L, 336D, 336D2, 336E L, 336F L, 345D L, 349D L, 349E L, 349E L VG, 349F L, ...
3346505
BRACKET AS
312D, 312D L, 312E, 312E L, 315D L, 316E L, 318E L, 319D L, 319D LN, 320D, 320D L, 320D LRR, 320D RR, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323D L, 323D LN, 323D SA, 323E L, 324D, 324D L, 324E, 32...
312D, 312D L, 312E, 312E L, 315D L, 316E L, 318E L, 319D L, 319D LN, 320D, 320D L, 320D LRR, 320D RR, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323D L, 323D LN, 323D SA, 323E L, 324D, 324D L, 324E, 32...
3334176
BRACKET
312E, 312E L, 316E L, 318E L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323E L, 324E, 324E L, 324E LN, 329E, 329E L, 329E LN, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F L, 349E, 349E L, 34...
312E, 312E L, 316E L, 318E L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323E L, 324E, 324E L, 324E LN, 329E, 329E L, 329E LN, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F L, 349E, 349E L, 34...
3622320
BRACKET
349F L, 374F L, 390F L, 621K, 623K, 627K, D6T LGP, D6T LGPPAT, D9T
349F L, 374F L, 390F L, 621K, 623K, 627K, D6T LGP, D6T LGPPAT, D9T
3433857
BRACKET AS
349E, 349E L, 349E L HVG, 349E L VG, 349F L, 374F L, 390F L, 621H, 621K, 623H, 623K, 627H, 627K
349E, 349E L, 349E L HVG, 349E L VG, 349F L, 374F L, 390F L, 621H, 621K, 623H, 623K, 627H, 627K
3720676
BRACKET AS
349E, 349E L, 349E L HVG, 349E L VG, 349F L
349E, 349E L, 349E L HVG, 349E L VG, 349F L
3520678
BRACKET AS
349E, 349E L, 349E L HVG, 349E L VG, 349F L
349E, 349E L, 349E L HVG, 349E L VG, 349F L
4327415
BRACKET AS
349F L
349F L
3767742
BRACKET AS
349F L
349F L
3822739
BRACKET AS
349F L
349F L
3639509
BRACKET
374F L, 390F L
374F L, 390F L
3639508
BRACKET
374F L, 390F L
374F L, 390F L
4229880
BRACKET AS
374F L
374F L
3886814
BRACKET AS
374F L, 390F L
374F L, 390F L
4327415
BRACKET AS
349F L
349F L
3978240
BRACKET AS
349F L
349F L
3886754
BRACKET AS
349F L
349F L
3886845
BRACKET AS
336F L, 349F L
336F L, 349F L
3902268
BRACKET AS
349F L
349F L
3902266
BRACKET AS
349F L
349F L