e Utility Blade Control Valve.
NOTE
(1) Removal. Remove utility blade control
Body and spool (14) must be replaced as a unit.
valve (TM 5-3810-232-12).
(4) Reassembly. Refer to figure 5-35 and
disassemble as follows.
reassemble valve as follows.
(a) Remove retaining rings (28), "E"
(a) Coat all metal parts with clean OE10
rings (2), and remove fulcrum rod (3), link (30), and lever
to provide initial lubrication and ease of assembly. Use
(29).
petroleum jelly on O-ring and back-up rings to hold them
(b) Remove screws (8), cap (9), and
in place when assembling.
remove screw (11), guide (12), retainer (13), and retainer
(b) Install O-ring (6) and (7) in body
(4) Then push spool (14) from body (14). Remove O-
halves (1) and (14). Assemble body halves, install studs
rings (5 and 15).
(26) and tighten nuts (27) to 55 to 60 foot-pounds torque.
(c) Remove plug (21) and remove
(c) Install poppet (16), spring (17), O-
spring (23) and valve (31). Remove plug (20), backup
ring (18), back-up ring (19) in body (14) and secure with
ring (19), O-ring (18), and remove spring (17) and poppet
plug (20). Install valve (31), and spring (23) in body and
(16).
install O-ring (22) and plug (21).
(d) Remove nuts (27) from studs (26)
(d) Install O-ring (15) in body and O-ring
and separate valve body halves (1) and (14). Remove
(5) on spool (14) and insert spool in body taking care not
O-rings (6) and (7).
to damage O-rings. Place retainer (4) in position and
(3) Cleaning, inspection and repair.
install retainer (13), spring (10), guide (12) and screw
(a) Clean all metal parts with an
(11). Secure these components with cap (9) and screw
approved cleaning solvent and dry thoroughly.
(8).
(b) Inspect all parts for cracks, scoring,
(5) Installation. Install utility blade control
corrosion, and other defects.
valve (TM 5-3810-232-12).
(c) Replace all O-rings and damaged or
defective parts.
5-74
