SANDPIPER RHDF2 Hazardous Duty - Manual (Page 20)

rhdf2dl1sm_haz duty-rev0614 Model RHDF2 Hazardous Duty Page 18
Air Valve Servicing, Assembly Drawing & Parts List
AIR DISTRIBUTION VALVE SERVICING
To service the air valve, first shut off the compressed air, bleed pressure from the pump, and disconnect
the air supply line from the pump.
Step #1:
• Using a 9/16" wrench or socket, remove the four hex capscrews. Remove the air valve assembly from
the pump.
• Remove and inspect gasket for cracks or damage. Replace gasket if needed.
Step #2: Disassembly of the air valve.
• Using a 7/16" wrench or socket, remove the eight hex capscrews that fasten the end caps to the valve
body. Next, remove the two end caps. Inspect the two o-rings on each end cap for damage or wear.
Replace the bumpers as needed.
• Remove the bumpers. Inspect the bumpers for damage or wear. Replace the bumpers as needed.
• Remove the spool from the sleeve. Be careful not to scratch or damage the outer diameter of the spool.
Wipe spool with a soft cloth and inspect for scratches or wear.
• Inspect the inner diameter of the sleeve for dirt, scratches, or other contaminants. Remove the sleeve if
needed and replace with a new sleeve and spool set.
Step #3: Reassembly of the air valve.
• Install one bumper and one end cap, with two o-rings, and fasten with four hex capscrews to the valve
body.
• Remove the new sleeve and spool set from the plastic bag. Carefully remove the spool from the sleeve.
Install the six o-rings into the six grooves on the sleeve. Apply a light coating of grease to the o-rings
before installing the sleeve into the valve body,
align the slots in the sleeve with the slots in
the valve body. Insert the spool into the sleeve.
Be careful not to scratch or damage the spool
during installation. Carefully insert the sleeve
into the bumper and end cap
(with o-rings) and fasten with the remaining hex
capscrews.
• Fasten the air valve assembly and gasket to the
pump. Connect the compressed air line to the
pump. The pump is now ready for operation.
Read these instructions
completely, before
i n s t a l l a t i o n a n d
start-up. It is the
responsibility of the
purchaser to retain this
manual for reference. Failure to comply
with the recommendations stated in this
manual will damage the pump, and void
factory warranty.
IMPORTANT
AIR VALVE ASSEMBLY PARTS LIST
Item Part Number Description Qty
1 031-183-003 Air Valve Assembly 1
1-A 031.012.162 Sleeve and Spool Set 1
1-B 095.043.156 Description 1
1-C 132-014.358 Bumper, Air Valve 2
1-D 165.011.157 Cap, End 2
1-E 170.032.330 Capscrew, Hex Head 1/4-20 x 3/4 8
1-F 360.010.427 Body, Air Valve 2
1-F 560.020.360 O-ring 6
1.B
1.A 1.A
1.C
1.F
1.D
1.E
1.F
1.C
1.F
1.D
Note to Trent: Do not paste this table in S/M. Only use to modify on
on page 18
Page 18
ITEM
NO.
PART NUMBER DESCRIPTION QTY.
1.A 031.012.162 SLEEVE & SPOOL SET 1
1.B 095.043.156 DESCRIPTION 1
1.C 132.014.358 BUMBER, AIR VALVE 2
1.D 165.011.157 CAP, END 2
1.E 170.032.330 CAPSCREW, HEX HEAD 1/4-20 X 3/4 8
1.F 360.010.427 BODY, AIR VALVE 2
1.F 560.020.360 O-RING 6