Remove screw (2) to separate the piston assembly. Discard screw (2)
Use a torque wrench to measure the force necessary to remove self-locking screws (8) and washers (9). If the force to
remove screws (8) is less than 1.5 in. lbs. (0.17 Nm), replace the screws during assembly.
When seal retainer is removed spring, ball and O-ring are free to fall out and get
lost. Work over a rag that will capture spring, ball and O-ring.
Remove seal retainer (10) by removing the four screws (8) and flat washers (9).
Remove remaining parts; spring (11), ball (12), quad ring (13), O-ring (14), seals (15), seal spacer (16), and O-rings
(17). Retain ball (12). Discard all other parts.
Teflon seal (18) and O-ring (19) should only be removed if damaged. If removed replace both during assembly.
Remove and discard outer teflon seal (20) and O-ring (21) from housing (6).
It is not necessary to remove the breather assembly unless the filter or screen is suspected
of being clogged.
If breather assembly (22) is removed for cleaning, flush it vigorously in clean solvent. If unable to get the breather
assembly (22) clean, replace the breather assembly (22) during hose end regulator assembly.
10. Remove O-ring (23) and clip (24) from housing (6). Discard O-ring (23).
Inspect all metal parts for dings, gouges and abrasions. Complete the following steps as
Use 320 grit paper to smooth and remove sharp edges.
Replace any part with damage that cannot be smoothed with grit paper.
Check both ends of housing (6) hall races for excessive wear or burrs. Remove any burrs or sharp edges.
The ball races are dry film lubricated. If a ball race is shiny the housing should be replaced or a dry film lubricant
Inspect outer diameters of inner piston (4) and outer piston (1) for scratches. If scratched, replace during assembly.