(4) Check the tie rods for twisting, breaks, and damaged, corroded, or stripped threads. Replace defective tie
rods and tie rod nuts.
(5) Inspect the piston for wear, warpage, twisting, corrosion, and scoring. Replace the piston if it is worn,
corroded, or damaged.
(6) Inspect all washers for cracking or chipping edges. Replace defective washers.
(7) Inspect all threaded surfaces for damaged, corroded, twisted, broken off, or stripped threads. Replace all
(8) Check the valve bodies for cracks, breaks, and leaks. Replace broken, cracked, or leaking valve bodies.
(1) Install a new packing ring (25) in the cover (24).
(2) Install the valve seat (28), plunger (27), and regulating valve spring (26) in the regulating valve body (2).
(3) Install the cover (24) and tighten the setscrews (6).
(4) Install the adjusting screw (23), washers (22), and locknut (21).
(5) Install the regulating valve spring cover (20) but do not tighten.
The valve must be adjusted after
(6) Assemble the upper spring control washer (15), piston stop block (16), spring (17), and lower spring control
washer (15) on the piston (14).
(7) Install the piston pin (18).
(8) Push the piston assembly into the operating valve body (13). Install the operating valve spring cover (19)
and gasket (9). Install and tighten the setscrews (6).
(9) Install the piston seal (8) and felt washer (7) on the upper part of the piston (14).
(10) Install the gasket (9) and lever bracket (5) and tighten the setscrews (6).
(11) Install new oil seals (3) in the operating valve body (13) and the exhaust valve body (10). Make sure that the
seals are seated firmly and evenly in their seats.
(12) Attach the exhaust valve body (10) to the operating valve body (13), being extremely careful not to shift the
oil seals (3).
(13) Attach the regulating valve body (2) to the operating valve body (13) and make sure that the oil seals (3)
have not shifted from their seats.
(14) Install the tie rods (11). Tighten the nuts (1) firmly and evenly.