Servicing sleeves and seals – Sun Pumps SPB 10-16C-1.0 User Manual
Page 5
your palm as the cylinder assembly is installed. Use the spring to hold parts in
cylinder as it is slid over piston rod.
4. Remove spring from cylinder, install retainer, conical washer, slotted nut and torque
per chart.
5. Install new cotter pin and bend ends back.
6. Replace spring in cylinder.
7. Lubricate inlet and discharge ends of adapter and install back-up rings first, then o-
rings onto adapter. Lubricate O.D. of small diameter inlet end of adapter and press
into cylinder.
8. Rotate crankshaft to extend new piston rod. Proceed as above with second and third
cylinders. Proceed with standard Piston Pump Servicing.
SERVICING SLEEVES AND SEALS
DISASSEMBLY
1. Remove discharge manifold and piston assemblies as described.
2. Remove inlet manifold containing seals.
3. Grasp sleeves and with a pulling and twisting motion remove the sleeve from the
piston rod.
Note: Grasp sleeve with pliers only if replacing worn sleeves, as the procedure will
mar the sleeves.
4. Next remove seal retainer.
5. Remove and examine o-rings and/or back-up rings on piston rod for wear and
replace as needed.
REASSEMBLY
1. Visually inspect that Barrier-Slinger is in position.
2. Lubricate new o-rings and/or back-up rings and slip onto piston rod. Install the first
o-ring (A) in the groove on the piston rod. Next position back-up ring (B) against the
stepped shoulder. Then install the second o-ring (C). Exercise caution as you slip the
o-ring over the thread end of the piston rod.
3. Examine sleeves for scoring or etching and replace. Immerse sleeves (D) in oil and
carefully twist and push sleeve onto rod with machined counter bore end first
(E).
4. Next install seal retainers. If wicks are used, replace wicks, thoroughly saturate with
oil, place in seal retainer and install retainer.
5. Place inlet manifold on pair of clearance blocks with crankcase side down and drive
out old seals.
6. Invert inlet manifold with crankcase side up and install new seals. Lubricate O.D. of
seal and install Prrrrm-A-Lube seal with garter spring down. If using blue dot seal,
install blue dot seal facing up.
7. Slip lubricated seal inserters onto piston rod ends, position inlet manifold onto pump
and remove seal inserters. Some models secure inlet manifold to crankcase. Replace
fasteners and torque per specification chart.
8. Reassemble piston assemblies and discharge manifold as described.