Volkswagen 01M - Manual (Page 17)

AUTO TRANS DIAGNOSIS - 01M
Article Text (p. 17)
1996 Volkswagen Golf
For Volkswagen Technical Site
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, August 19, 1999 11:28PM
HYDRAULIC PRESSURE
Check operation of apply and brake clutches by air checking
fluid passages of valve body and transaxle case. Install Pressure
Gauge (VAG 1702) to transaxle pressure tap located near dipstick tube.
Check main hydraulic pressure under normal driving conditions. See
MAIN PRESSURE table. If main hydraulic pressures are not correct,
check for incorrect idle speed, problem with pump or sticking valves
in valve body. Repair as necessary.
MAIN PRESSURE
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Application psi (Bar)
"D"
Idle RPM ............................... 49-55 (3.4-3.8)
2000 RPM (1) ....................... 146-164 (10.1-11.3)
"R"
Idle RPM .............................. 94-109 (6.5-7.5)
2000 RPM (1) ....................... 334-348 (23.0-24.0)
(1) - With solenoid valve connector disconnected. After test,
reconnect solenoid valves and using appropriate scan tool,
erase trouble codes from memory.
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STALL SPEED
CAUTION: DO NOT operate engine at stall speed for more than 5
seconds. If you need to repeat stall speed test, wait 20
seconds.
1) Engage parking brake and block drive wheels. Connect
tachometer to engine. Warm engine to normal operating temperature.
2) Firmly press brake pedal. Move gear selector to "D"
position. Open throttle to wide open throttle position. Note engine
speed and release throttle pedal.
3) Compare measured stall speed with stall speed
specification. See STALL SPEED SPECIFICATIONS table. If stall speed is
within range, test is complete.
4) If stall speed is up to 200 RPM too low, check engine
condition and adjustments. If stall speed is greater than 200 RPM too
low, torque converter is faulty. If stall speed is too high, check
1st-3rd apply clutch or one-way clutch for slipping or damage.
STALL SPEED SPECIFICATIONS
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Application RPM
CLK ............................................ 2600-2900
CLB & CKZ ...................................... 2250-2550
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