Mec 3072RT, Service Manual

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"3072RT / 3772RT / 3772RT HD" Service & Parts Manual - ANSI Specifications March 2008
Page 3-11
Throttle Solenoid Adjustment - Diesel
IMPORTANT: This final adjustment must be made after all other throttle speed adjust-
ments. The solenoid must be free to retract fully in order to turn OFF the High Amperage
Pull Circuit. Improper adjustment will result in solenoid failure and may damage the elec-
trical system.
1. With the engine OFF, manually retract the solenoid by grasping the piston, just ahead of the
boot, and pull to the fully retracted position.
2. With the solenoid piston fully retracted measure the distance between the High Speed
Stop Screw and the Throttle linkage using a .020 feeler gauge.
3. Adjust clearance at the Throttle Solenoid linkage only.
Do not adjust the High Speed
Stop Screw.
• Disconnect the linkage at the clevis and turn the clevis to lengthen or shorten as
necessary.
• Reconnect the clevis and measure again. Repeat until the measurement is correct.
High S peed
S top S crew
Idle S top
S crew
.020
Throttle
S olenoid
Throttle S olenoid Pi s ton
(Thre a ded Rod)
Throttle S olenoid
Adj us tment
Throttle Lever
Clevi s