TM 9-2320-302-34
0044 00-4
3K TURBOCHARGER WASTEGATE ACTUATOR MAINTENANCE - CONTINUED
0044 00
ADJUSTMENT - CONTINUED
2.
Attach dial indicator (18) to wastegate actuator rod (5) to measure rod travel.
3.
Connect air supply through regulator valve (19), shutoff valve (20), pressure gage (21), and vent valve (22) to wastegate
(3).
4.
Adjust regulator valve (19) to provide 34 psi (234 kPa) of air pressure to wastegate (3).
5.
Close air supply at shutoff valve (20) and observe reading on pressure gage (21).
NOTE
If pressure drops, check actuator hose and fitting connections for leaks. If none are found, replace wastegate
actuator.
6.
Open vent valve (22) to relieve pressure and observe pressure gage (21) for zero indication. Adjust regulator valve (19)
to zero and close vent valve.
7.
Adjust dial indicator (18) to contact actuator rod (5) end and adjust to a zero reading.
8.
Open air supply at shutoff valve (20) and slowly adjust regulator valve (19) to 34 psi (234 kPa). Switch pressure on and
off with vent valve (22) to ensure dial indicator travel from 0.00 in to 0.070 in (1.79 mm) and that pressure reading is
consistent.
9.
Actuator adjustment should be set for an indication of 0.070-0.075 in (1.79-1.91 mm) actuator rod travel at 34 psi (234
kPa) pressure setting.
NOTE
If travel is within limits, relieve and disconnect air pressure to wastegate actuator. If travel is not within lim-
its, proceed to next step to adjust actuator rod travel.
10.
Loosen jamnut (17) on actuator rod (5).
11.
Remove retaining ring (4) securing actuator rod (5) to wastegate lever (7).
3
2
19
20
21
22
17
5
7
4
18
1
