GROMMET 2D2751 - Caterpillar

Specification
Gas pressure is variable with temperature. Check the temperature of the air around the accumulator. To check the amount of charge in an accumulator, the accumulator must be at the same temperature as the surrounding air.Note: The temperature of the accumulator may change as the accumulator is being charged due to the expansion or compression of the nitrogen charge. Charging the accumulator in several steps may be necessary to ensure a correct charge.
Table 1
"Accumulator (Ride Control) - Test and Charge"
Date: Machine Serial Number:
Specification(1)
Item Temperature of Gas Model Actual
M314F M316F
Ride Control Accumulator 0° C (32° F) 6,000 kPa (870 psi) 6,500 kPa (943 psi)
20° C (68° F) 6,500 kPa (943 psi) 7,000 kPa (1,015 psi)
40° C (104° F) 6,900 kPa (1,001 psi) 7,500 kPa (1,088 psi)
60° C (140° F) 7,400 kPa (1,073 psi) 8,000 kPa (1,160 psi)
(1) The tolerance for ride control accumulator charge pressure is - 200 kPa to + 400 kPa (- 29 psi to + 58 psi)Introduction
The following procedure will determine if the accumulator for