Pressure testing

AR27.10-T-0171AC

Pressure testing

10.11.09

TRANSMISSION 721.108 /109 /141 /151 /181 /182

T27.10-0007-01

1 Screw plug (primary pressure PH)

2 Screw plug (throttle pressure PD1)

3 Screw plug (pressure upstream of converter PD2)

4 Screw plug (pressure downstream of heat exchanger PD6PD7)

5 Screw plug (retarder pressure PR3)

6 Screw plug (retarder control pressure PRR3)

T27.10-0008-01

Pressure gauge connection

	Checking
 Danger!	Risk of injury to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning caused by swallowing hydraulic fluid	Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
1	Remove screw plug (1, 2, 3, 4, 5, or 6,) and connect pressure gauge	 Remove relevant screw plug to match pressure test. To perform the pressure test the transmission must be at operating temperature (temperature of oil approx. 80 - 90 °C ), and the oil level and oil quality must be OK.
			*BA27.10-N-1004-03A
			*123589042100
			*123589042102
2	Carry out pressure test	 The specified values for each of the pressures to be measured are assigned to specific operating conditions.
		Pressure measuring table	AR27.60-T-1130-01AC
3	Disconnect pressure gauge and screw-in screw plug (1, 2, 3, 4, 5, or 6,)	 Replace sealing ring.
			*123589042100
			*123589042102
			*BA27.10-N-1004-03A
4	Inspect oil level, adjust to correct level if necessary.
	Automatic transmission - oil and filter change		AP27.00-T-2702A

 Oil pan, automatic transmission

Number	Designation		Transmission 721.141	Transmission 721.151/181/182


BA27.10-N-1004-03A	Screw plug for pressure gauge connection	Nm	12	-

123 589 04 21 02

Connector

Tester

123 589 04 21 00