TM 9-2320-302-34
0045 00-4
GARRETT TURBOCHARGER WASTEGATE ACTUATOR MAINTENANCE - CONTINUED
0045 00
ADJUSTMENT
1.
Disconnect hose (2) from wastegate (3).
NOTE
Dial indicator must have a minimum of 0.100 in (2.5 mm) travel for measurement.
2.
Attach dial indicator (15) to wastegate actuator rod (9) to measure rod travel.
3.
Connect air supply through regulator valve (16), shutoff valve (17), pressure gage (18), and vent valve (19) to wastegate
(3).
4.
Adjust regulator valve (16) to provide 31 psi (214 kPa) of air pressure to actuator (3).
5.
Close air supply shutoff valve (17) and observe reading on pressure gage (18).
NOTE
If pressure drops, check actuator hose and fitting connections for leaks. If none are found, replace wastegate
actuator.
6.
Open vent valve (19) to relieve pressure and observe pressure gage (18) for zero indication. Adjust regulator valve (16)
to zero and close vent valve.
7.
Adjust dial indicator (15) to contact actuator rod (9) end and adjust to a zero reading.
8.
Open air supply shutoff valve (17) and slowly adjust regulator valve (16) to 31 psi (214 kPa). Switch pressure on and off
with vent valve (19) to ensure dial indicator travel from 0.00 in to 0.040 in (1.02 mm) and that pressure reading is con-
sistent.
9.
Actuator adjustment should be set for an indication of 0.040 (1.02 mm) at 31 psi (214 kPa) pressure setting.
16
17
18
15
2
19
9
2
