TM 5-2420-230-24-2
A/C Cylinder Head (QE Models) (012-104)
B3.9 and B5.9 Series Engines
Page 12-46
Section 12 - Compressed Air System - Group 12
Install the new rectangular v-seal into the unloader body.
NOTE: The seal must be installed with the grooved side up.
Liberally lubricate the unloader valve bore above and be-
low the rectangular ring seal with high-temperature grease
(Accrolube lubrication TeflonTM grease or equivalent).
Install a new o-ring seal on the unloader valve body.
Use clean lubricating engine oil or Accrolube lubrication
TeflonTM grease, or equivalent, to lubricate the seal.
Liberally lubricate the unloader valve body bore and
unloader cap with high-temperature grease (Accrolube lu-
brication TeflonTM grease or the equivalent).
Install the unloader cap.
Install the unloader spring.
L-1250