PN97999-1029
NM2202B-XPage2of2

PUMP OPTION DESCRIPTION CHART

NM2202B - X 1 - X 3 1
CONTAINERSUITABILITY
PLUNGERTYPE
SPRINGARRANGEMENT
CONTAINERSUITABILITY PACKINGMATERIAL
1 -Universal (Stub) 7 -PTFE (upper and lower)
4 -55 Gallon B -UHMW-PE (upper) / PTFE (lower)
C -UHMW-PE(upper and lower)
J -Polyurethane (upper) / UHMW-PE (lower)
SPRINGARRANGEMENT PLUNGER TYPE
3 -No Spring 1 -Standard(300 series Stainless steel)
PACKINGMATERIAL

GENERAL DESCRIPTION

ModelNM2202B-X Series two-ball, double acting pumps are intended
tobe used primarily for oil transfer and delivery systems. It is best to use
thispump with low -- medium viscosity fluids. It uses Stainless steeland
othermaterials which make it compatible with most petroleum based lu-
brication products. The two-ball design provides better priming of the
lowerfootvalve. Double acting pumpswilldeliver material on both the up
anddown stroke.
NOTE: If this pump waspurchased separately (not part of a system),
consult your sales representative for compatible dispensing accesso-
rieswhich will best match the application. All accessories must be able
towithstand the maximum pressure developed by the pump.
WARNING HAZARDOUSPRESSURE. Do not exceed maxi-
mumoperatingpressure of 351 p.s.i. (24.2 bar) at 150 p.s.i. (10.3
bar)inlet air pressure.
PUMPRATIO X MAXIMUMPUMP
INLETPRESSURE TO PUMP MOTOR =FLUIDPRESSURE
Pumpratio is an expression of the relationship between the pump motorarea and the
lowerpump end area. EXAMPLE: When 150 p.s.i. (10.3 bar) inletpressure is supplied
tothe motor of a 4:1 ratio pump it will develop amaximum of 600 p.s.i. (41.4 bar) fluid
pressure(at no flow) - as the fluid control is opened, theflow rate will increase as the
motorcycle rate increases to keep up with the demand.
WARNING Referto general information sheet for additional
safetyprecautions and important information.
NOTICE:Thermal expansion can occur when the fluid in the materi-
al lines is exposed to elevated temperatures. Example: Material
lineslocated in a non-insulated roof area can warm due to sunlight.
Installa pressure relief valve in the pumping system.
Replacementwarning label (pn 94520) is available upon request.

TROUBLE SHOOTING

Pumpproblems can occur in either the Air Motor Section or the Lower
PumpEnd Section. Use these basic guidelines to help determine which
sectionis affected. Be sure to eliminate any possible non-pump prob-
lemsbefore suspecting pump malfunction.
Pumpwill not cycle.
•Nopressure to the motor. See motor manual.
•Damagedmotor. Service motor
Nomaterial at the outlet (pump continually cycles).
•Checkthe material supply, disconnect or shut off the air supply and
replenishthe material, reconnect.
Materialon one stroke only (fast downstroke).
•The lower check may not be seating in the foot valve (see lower
pumpdisassembly). Remove the check from the foot valve, clean
andinspect the valve seat area. If check or foot valve are damaged,
replace.
Materialon one stroke only (fast upstroke).
•Themiddle packings may be worn (see lower pump disassembly).
Replacethe seals as necessary.

PUMP CONNECTION - UPPER / LOWER

NOTE:All threads are right hand.
1. Laythe pump assembly on a workbench.
2. Removefour (Y99-41-C) cap screws and pull the air motor from the
lowerpump end until the motor piston rod is in the “down” position
andthe lower pump end rod is in the “up” position.
3. Removethe (Y15-31-C) cotter pin and (96064) pin, releasing the air
motorfrom the lower pump end.
LowerPump Rod
PumpMotor Piston Rod
CotterPin Y15-31-C
PUMPCONNECTOR DETAIL
Figure2
Pin96064
REASSEMBLY
1. Assemblemotor piston rod to the lower pump end rod, aligning thru
holes.
2. Assemble(96064) pin through hole, securing rods.
3. Assemble(Y15-31-C) cotter pin through hole in pin.
4. Aligntie rods with holes in pump outlet body.
5. Assemblefour (Y99-41-C) cap screws, securing air motor. NOTE:
Tightencap screws to 50 in. lbs (5.65 Nm).