Pentair Myers D35 Series User manual

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
D35, D50 AND D60 SerieS
INDUSTRIAL PUMPS
Part # 23833A034 | © 2014 Pentair Ltd. | 06/04/14

23833A034 06/04/14 2
GENERAL INSTRUCTIONS
Reciprocating pumps of both the plunger and cup
type are positive displacement in principle. Due to
positive displacement characteristics, problems may
arise through improper installation or application.
When new or unusual installations are planned, or
the material to be pumped is a liquid other than cold
water, the customer should consult the factory for
additional information.
Positive displacement pumps must have a proper
size and operable type of pressure regulating valve
or pressure relief valve piped into the discharge line.
This is mandatory to prevent damage to pump and
piping or possible injury to personnel. Do not install
any valves or shutoff devices in the by-pass line from
pressure regulator to tank or supply.
All pumps should be installed level. For mobile
applications the maximum angle of intermittent
operation should be no more than 5 degrees in any
one direction.
CALIFORNIA PROPOSITION 65 WARNING:
This product and related
accessories contain chemicals known to the State
of California to cause cancer, birth defects or
other reproductive harm.
INSTALLATION
Install suction piping one pipe size larger than suction
tapping in pump. Reduce piping size at pump with a
reducer coupling. A suction surge arrester will assure
smoother operation. Keep suction piping as short
and simple as possible with a minimum of lift when
operating under suction lift conditions. Avoid any high
points in suction line. Suction piping must not have
any air leaks. Check suction piping assembly for leaks
by using 20-80 psi air pressure and soap bubbles or
submerging assembly under water.
Use suction strainer and screen of adequate size
to avoid restriction of pump suction. Strainer mesh
should be sufficiently small to prevent passage of
trash which may lodge under pump valves. Keep
screen clean with a regular maintenance schedule to
avoid starving pump suction. Many pump problems
and most plunger cup failures are directly traceable to
a starved suction condition.
When pumping liquids that are heated, reduce
pump speed to avoid suction problems. Be sure
that discharge line is properly protected by means
of a pressure regulating valve and a discharge surge
arrester of proper size, capacity and pressure rating.
The discharge line should be of comparable size to
discharge tapping in pump. Discharge line velocity
should not exceed 5 feet per second for most
satisfactory operation.
Nozzle capacity or demand should not exceed 90%
of pump capacity for satisfactory regulating valve
operation. Nozzling in excess of this capacity may
cause unstable pressure regulator operation. It is
also preferred to nozzle in excess of 50% of pump
capacity to reduce the rate of erosion or wear on the
regulating valve and seat.
When lower system capacity demands are required,
the pump speed should be reduced by changing drive
ratios. This will reflect savings in power consumption,
while reducing valve wear and extend pump life.
If line shock or water hammer is encountered, a
second surge arrester should be installed in the
discharge line adjacent to the spray gun or nozzles.
Under some conditions it may also be desirable to
isolate pump from piping with a suitable high pressure
hose. This will eliminate transmission of line vibration
to the pump and minimize possible failure of piping,
pipe threads and pump casting.
Never pipe the bypass from a pressure regulating
valve back into the pump suction. When the discharge
line is shut off, the complete bypass is circulated
back into the pump suction with a resulting rapid
temperature rise which will destroy plunger cups and
gaskets.
Avoid freezing by draining all water from pump and
system in cold weather. Make sure that the drive is
adequate for the horsepower required and is properly
aligned and tensioned. With belt drives, the pulley
on both the motor and pump should be located as
closely as possible to the bearing to reduce bearing
and shaft bending loads. Make sure that all bolts,
nuts, set screws and keys are properly tightened and
pump belts and pulleys are properly protected by
guards according to code.
DIRECT DRIVE ENGINE DRIVEN PUMPS
It is desirable to align the Dodge®Para-Flex®
couplings as accurately as possible to minimize
flexing. After any repositioning, recheck both parallel
and angular alignments by mounting indicators,
near the O.D. of the flange, and rotate the shaft 360
degrees. A good installation indicator reading should
exceed .030". Flange should be positioned on shaft
to obtain 3-1/16" measured from adapter to rear of
clamp ring. Adaptor bolts should be torqued to 300lbs
and clamp ring bolts to 400lbs.
STARTING PUMP
Fill pump crankcase with recommended oil to the
level mark on the oil saber. Oil recommendations are
covered in lubrication section of pump instructions.
Replace all drain plugs in pump and piping. Inspect
tank to be sure that no foreign material is in tank
or suction line. Fill tank at least half full or connect

23833A034 06/04/14
3
suction to water supply. Open valve if present in
suction line. If pumping from a pit, make sure that
suction line is completely submerged. Make sure
all valves, including spray gun or nozzles, are open
in discharge line. Spray gun may be anchored to
discharge back into the tank. Completely back off
pressure adjusting screw on pressure regulating valve.
CAUTION: When pumping from a pit or under a
suction lift condition, remove the cylinder end caps
and pour water into each cylinder. This will assure that
water is present in the cylinder to lubricate cups.
After starting, close discharge valve or spray gun
slowly while watching pressure gauge to make sure
relief valve or unloader is operating properly. Adjust
relief valve or unloader to desired pressure. See
regulator instructions. Cycle nozzles, or gun, on and
off to be sure that pressure adjustment and regulator
operation is satisfactory. Nozzle capacity should
not exceed 90% of pump capacity for satisfactory
regulating valve operation.
LUBRICATION
Fill gear case with Mobilgear 630 or equal additive
to 3-1/2 qts for D35 Series and 5-1/2 qts for D50-60
Series. Maintain oil level at the mark on oil dipstick.
NOTE: After first 30 hours of operation, drain oil from
gear case (preferably drain at operating temperature),
replace plug and fill gear case with kerosene to
normal oil level. Operate at full speed at zero pressure
for two minutes then drain, replace plug and refill
crankcase with new oil. Change oil every 300 hours
thereafter. Check oil level daily and add oil as needed.
ADDITIVES FOR CRANKCASE OIL
Use of molybdenum disulfide (MoS2) is highly
recommended as an additive to the gear case oil in
back geared pumps and speed reducers. The additive
is compatible with all known oils. It appears to be so
effective in reducing wear and friction that power train
life may be doubled between overhauls.
• D35 volume MoS2concentrate or dispersion “M”
for 5% – 6 fl. oz.
• D35 volume MoS2concentrate or dispersion “M”
for 10% – 12 fl. oz.
• D50-60 volume MoS2concentrate or dispersion
“M” for 5% – 9 fl. oz.
• D50-60 volume MoS2concentrate or dispersion
“M” for 10% – 18 fl. oz.
SERVICE
Disconnect electrical leads to motor, or remove spark
plug leads on engine.
REMOVING PLUNGERS: BELL SHAPED
CUPS
Place plunger at front end of cylinder and remove
valve assembly, if required, to provide clearance for
pulling plunger. Remove socket head cap screw,
thread plunger removal tool onto plunger stud and pull
plunger out of cylinder liner.
REPLACING PLUNGER CUPS
(MODELS D35-12D, D50-12, D60-10)
Remove nut from plunger stud and remove worn cup.
Apply non-hardening sealing compound and replace
with new cup. Thread nut back onto plunger stud and
tighten nut to a snug compression loading.
CAUTION: Do not overtighten nut on plunger cup,
as this will cause excessive squeeze at the cup heel
resulting in rapid cup wear.
Before installing the plunger in the cylinder, the ring
gasket seal between the plunger and rod should be
inspected and replaced if worn. Inspect cylinders for
linear grooving and replace cylinders if necessary.
New cups will rapidly cut or wear out in groove
cylinders.
Thread the plunger removal tool onto the plunger stud
making it flush with the plunger nut. Lubricate plunger
cup with Molykote®or Lubriplate®and check to be
sure that the ring gasket is installed in plunger stud.
Retract plunger rod by rotating pump crankshaft.
Install plunger by driving plunger assembly back into
cylinder. Replace plunger rod socket head cap screw.
REPLACING PLUNGERS
V-RING PACKING (MODEL D35-12AVD)
Move plunger to the front end of the cylinder and
remove valve assembly if required to provide
clearance for pulling plunger. Remove cap screw and
with plunger at extended position, back off piston rod
and insert tool until large diameter catches behind
stud. Force plunger assembly from liner by rotating
crankshaft slowly. Inspect cylinders for linear grooving
and replace cylinders if necessary. New packing will
rapidly cut or wear out in grooved cylinders.

23833A034 06/04/14 4
V-rings should be lubricated with Molykote for ease in
assembly. Do not use a graphite type grease.
When installing each V-ring plunger assembly, rotate
crankshaft until piston rod is at the most extended
position. Place copper gasket in position in the stud
and use a small amount of Permatex®to hold in place.
Insert plunger assembly into liner and drive slowly into
place. Cap screw should then be inserted and torqued
to 25 ft/lb.
REPLACING PLUNGERS
SINGLE LIP CUP (MODEL D35-8PP)
Move plunger to front end of cylinder and remove
suction valve if required for clearance for pulling
plunger. Remove socket head cap screw and rotate
crankshaft to retract plunger rod from cylinder. Insert
V-ring packing tool into rear of cylinder and force
plunger assembly from cylinder by slowly rotating
crankshaft. Inspect cylinders for linear grooving and
replace cylinders if necessary. New cups will rapidly
cut or wear out in grooved cylinders.
Grease the O-ring and install in the groove on cup
follower. With a flat plate behind cup, hold the cup
and follower firmly in a vise with follower boss in hole
in cup. Use a thin blunt tool and carefully push entire
circumference of O-ring to the back of the groove
and under the lip of the cup. Assemble all parts onto
socket head cap screw and apply Lubriplate®to the
outside of cup. With plunger rod in forward position,
insert plunger assembly into cylinder and tighten cap
screw.
REPLACING CYLINDER LINERS
Remove plungers and rotate crankshaft until piston
rod is in rear position. Insert puller through the inside
of cylinder and pilot over piston rod. Insert disc into
slots on puller and slip plate over threads on puller.
Screw nut onto thread on puller and snug up. Tighten
nut until liner breaks loose. Loosen nut, slip disc out
of slot and remove puller. Repeat to remove remainder
of cylinder liners.
Reasonable care and judgment should be used
when installing the new tapered cylinder shell. Clean
out any accumulation of loose rust or corrosion in
tapered cylinder slots. Insert shells into position by
hand and drive into position firmly. Never use a hand
or hydraulic arbor press to install cylinder shells. If
extreme pressures are used during installation, parts
will be very difficult to remove for later replacement
and liners may be distorted.
REPLACING SEATS: CENTER POST
VALVES
Remove the valve and cylinder caps which provide
access to both the suction and discharge valves.
Remove the stainless steel shoulder screw, which
serves as a valve guide and spring retainer, spring
and valve from the pump fluid end. Assemble stud,
retainer and three screws. Insert screw heads through
holes in valve seat. Rotate retainer to the right until
heads catch and secure in place by screwing down
stud firmly by hand. Place plate over stud and screw
on nut. Torque slowly until seat breaks loose. Suction
valve seats in similar manner, except two stud lengths
are joined using coupling.
NOTE: Valve seats are usually distorted and cannot be
reused unless face is reground to flat condition.
Inspect tapered valve seat bore in fluid end for rust
and wipe out excess. Place a new lower seat in
tapered hole and drive lower seat firmly into place.
Repeat for upper seat being sure to also inspect
the tapered bore in housing for rust. Reassemble
the valve, spring and spring retainer, and verify that
springs are in correct location. When upper and lower
valve seats are the same size, the heavier spring is
always installed on the upper or discharge valve.
NOTE: Be sure that shoulder screw is bottomed in
valve seat and the valve disc is installed on valve with
flat face down.
Inspect O-ring on valve and cylinder caps. Replace
if they show signs of wear. Lubricate O-rings and
replace cap, bar and nuts.

23833A034 06/04/14
5
REPLACING SEATS: CAGED VALVES
Remove spring retaining bar, spring and flat valve.
When removing upper valve seat, pass head of puller
through hole in valve seat before the slide wedge is
inserted alongside puller bolt. Draw down on the nut
at the top of the bolt. When removing lower seats,
drop puller bolt through opening for upper seat and
remove in same manner using the slide wedge on
pumps where lower seats are same size as upper
seats.
Place new lower seat in tapered hole in cylinder body.
Hold a soft brass or hardwood round bar against
slot and drive into place. The knocker stem is in
two pieces so that it can be shortened for installing
discharge valves after suction valves have been
installed.
REPLACING PLUNGER ROD SEALS
The rod seal assembly contains two seals and two
oil seals with lips facing the power end. The oil seal
can be replaced without taking the fluid end off by
removing the cylinder and piston to allow access to oil
seal housing. Unscrew the two Allen screws and place
them into the other two tapped holes. Gradually screw
them in to push oil seal housing off the retainer. After
assembling new seals in oil seal housing, an assembly
thimble should be used on the end of the crosshead
rod for sliding the oil seal housing back into the
retainer. Check gasket and replace if damaged.
REMOVING CRANKSHAFT AND
PINION SHAFT
Remove plunger assemblies and remove connecting
link caps. Move the link-crosshead assembly as far
forward as possible. On some models, it may be
necessary to remove the fluid cylinder body to obtain
clearance for crankshaft removal.
Secure separation of the crankshaft gear and gear
case so that crankshaft will be held in place against
pinion shaft. Remove both crankshaft bearing caps.
Hold crankshaft at ring gear and left-hand link journal
to prevent dropping into bearing bores and remove
from gear case by moving crankshaft to the right until
left end can be swung free.
To remove pinion shaft, observe inside of gear case
to see if small sheet metal plates are in front of each
bearing. These plates must be removed prior to
the bearing caps.
Tap the end of the pinion shaft extension to remove
the bearing cup at the opposite end. After removing
pinion shaft, the remaining bearing cup can be
removed by gently tapping against the peripheral
edge of the cup with a brass rod.
REPLACING PINION SHAFT AND
SHIMMING BEARINGS
After installing the link-crosshead assemblies and
moving them toward the fluid end as far as possible,
tap the right-hand pinion shaft bearing cup into
position using the bearing cap. Place pinion shaft in
position and tap left-hand bearing cup into place.
Replace sheet metal plates, if used on this model
pump.
Cover the shaft keyway to protect lip of oil seal. Slide
on the open bearing cap with a .030" shim. Tighten
the four cap screws to recommended torque.
Install other cap using total shim thickness. Tighten
cap screws holding pinion or crankshaft caps to gear
case. Rotate pinion shaft back and forth, applying
about 15 lbs. axial force to properly seat tapered
rollers. Measure end-play by using an indicating
gauge.
Subtract recommended end-play (.005"– .009") from
actual end-play. This is the amount of shim that must
be removed. After excess shim thickness has been
removed, replace caps and retighten cap screws.
Measure end-play, and if end-play is not within limits
recommended, add or subtract shims as required.
Pinion bearing shims are made of .002" layers bonded
together. Start separation of layers by heating edge,
then peel back.
REPLACING CRANKSHAFT AND
SHIMMING BEARINGS
Press the bearing cups into the caps. Place one
cap into position on the right side with cap screws
engaged about one turn. Install crankshaft, left end
first, and push both bearing caps into place. Extreme
care should be exercised to avoid damage to gear
teeth, bearings and link journals.
For quiet operation and long life, the crankshaft
and bearings must be installed with .003" to .005"
preload. To adjust, loosen the four cap screws on the
pinion shaft bearing cap. Place about a .045" shim
on the right crankshaft bearing cap and tighten the
five cap screws. Install the left cap without shims
and secure with two cap screws. Torque at 13 ft/lbs
and rotate the crankshaft. Retorque the cap screws.
Repeat three times to properly seat the tapered roller
bearings. Measure the shim gap remaining between
the bearing cap and the gear case. Required shim
thickness for this cap is equal to the average gap
measurement plus .031" for D35 and .022" for D50-60
Series. Insert correct shim thickness under left bearing
cap and tighten cap screws. Next, install connecting
links and caps, and torque cap screws.

23833A034 06/04/14 6
Check for adequate side clearance of links on
crankshaft. Some shims must be moved from one
end to the other until sideways movement of all links
can be seen. Check the torque of cap screws on all
bearing caps.
RECONDITIONED CRANKSHAFTS
When the crank throws are slightly damaged, they can
sometimes be reconditioned for further use. This can
be done by sandpapering and polishing until all ridges
are completely removed. The final polishing operation
should be with very fine emery cloth. If the surface is
badly damaged, the crankshaft can often be salvaged
by “metalizing” the crank throw, regrinding and
polishing to the original diameter.
SERVICING CONNECTING LINKS
The connecting rod link is furnished with replaceable
split sleeve bearing inserts at the crank throw. Do not
attempt to re-fit connecting links to the crankshaft
bearings by filing or grinding the mating faces of the
link cap where it contacts the link. Always be sure
that the proper side of the link is placed upward
when attaching it to the crankshaft. The upper side
contains an oil hole at the crosshead end of the link.
This oil hole must be up to allow proper oil feeding
to the crosshead pin bushing. The wrist pin is then
press-fitted into the crosshead and slip-fitted through
the bronze bushing. Use an arbor press to force in
the wrist pin, checking to see if the link is free to
rotate after the wrist pin is pressed in. Verify that both
sides of the wrist pin do not protrude beyond the
crosshead.
The crosshead end of the connecting link is fitted with
a bronze bushing. New replacement link bushings are
reamed to the proper size for immediate installation.
If the bushing is removed from an old link, it may
be necessary to ream the replaced bushing to the
proper inside diameter after it is pressed into the link.
When placing the bushing on the link, be sure that the
oil holes in the bushing and link are in line after the
bushing is pressed into position.
CROSSHEAD AND PISTON RODS
Repair parts for the crosshead and piston rod are
supplied as a complete unit. If either of these parts
becomes worn, it is necessary to replace both the
crosshead and piston rod. It is not practical to attempt
to tighten a loose piston rod in a crosshead. Under
normal conditions a crosshead will not wear, nor will
the bore of the crankcase wear to the extent that
oversize crossheads will be required. A clearance of
.002" to .004" is standard for the crosshead.
RECOMMENDED TORQUE VALUES
(foot-pounds)
FASTENER LOCATION
Link Bearing Caps - 40
Crankshaft End Caps - 20
Pinion Bearing End Caps - 20
Fastener Plunger Assembly
to Piston Rod Nut and Cap Screw- 25
Valve Cover Clamps - 50
Cylinder Cover Clamps - 50

23833A034 06/04/14
7
D35-8PP-2H & D45-12PP
INDUSTRIAL PUMPS PARTS LIST
41
45
39
35
37
42
43
44
48
49
26
28
27 29 30
31
32
21 22 19 17 15 13 14 23
12
11
40 38 36 34
33 46 50
47
24 25
20
9
10
812 3 4 5 18
16
7
6
Cap Screw 18832A000 (3 req) Cap Screw 18832A000 (3 req)
Retainer 18833A001 (3 req) Retainer 18833A000 (3 req)
Spring 11829A000 (3 req) Spring 18462A000 (3 req)
Valve 18834A001
(3 req)
Valve 18834A000
(3 req)
Valve Seat 18835A001 (3 req) Valve Seat 18835A000 (3 req)
DISCHARGE VALVE AND SEAT COMPLETE NO. 18925A001K SUCTION VALVE AND SEAT COMPLETE NO. 18925A000K

23833A034 06/04/14 8
D35-8PP-2H & D45-12PP
INDUSTRIAL PUMPS PARTS LIST
Catalog Number of Industrial Pump (Helical Gears) D35-8PP-2H D45-12PP
Item Description Qty. Eng. No. Eng. No.
1 GEAR CASE 1 04663E000 04663E000
2 GASKET, FOR GEAR CASE LID 1 06222C000 06222C000
3 CAP SCREW, 5/16"-18 UNC x 7/8" 8 19100A005 19100A005
4 LID, FOR GEAR CASE 1 04664B000 04664B000
5 VENT AND OIL FILTER PLUG 1 17388A000 17388A000
6 OIL GAUGE WITH O-RING 1 17360A010K 17360A010K
7 CYLINDER LINER 3 18806A001 18806A001
PLUG, 1-1/4" PIPE 1 05022A041 05022A041
PLUG, 2" PIPE 2 05022A048 05022A048
O-RING, FOR CYLINDER LINER 3 05876A085 05876A085
8 PINION SHAFT WITH HELICAL PINION 1 19816B000 19816B000
SHIM PLASTIC FOR PINION SHAFT .003" THICK 4 05231A074 05231A074
SHIM PLASTIC FOR PINION SHAFT .015” THICK 4 05231A075 05231A075
9 CONE, BEARING, PINION SHAFT 2 05674A013 05674A013
CUP, BEARING, PINION SHAFT 2 05675A009 05675A009
10 CAP, OPEN, PINION SHAFT 1 04563A001 04563A001
CAP, CLOSED, PINION SHAFT 1 04741B000 04741B000
OIL SEAL, OPEN END OF PINION SHAFT 1 05710A017 05710A017
CAP SCREW, 3/8"-UNC x 1", BEARING CAPS 18 19101A009 19101A009
WASHER SEAL, FOR 3/8" CAP SCREWS 18 14946A003 14946A003
11 CRANKSHAFT WITH HELICAL GEAR 1 19817C000 19817C000
12 CONE, BEARING, FOR CRANKSHAFT 2 05674A015 05674A015
CUP, BEARING, FOR CRANKSHAFT 2 05675A011 05675A011
CAP, BEARING, FOR CRANKSHAFT 2 18466B001 18466B001
SHIM PLASTIC, 4-17/32" I.D.,
6-1/32" O.D., .003" THICK
6 05068A017 05068A017
SHIM PLASTIC, 4-17/32" I.D.,
6-1/32" O.D., .015" THICK
5 05068A015 05068A015
13 CROSSHEAD AND PISTON ROD 3 06361B002 06361B002
14 LINK AND BUSHING AND CAP SCREWS 3 11651C002 11651C002
15 BUSHING, FOR LINK 3 B1619A000K B1619A000K
16 BEARING, HALVES REG., FOR LINK 3 11647A012K 11647A012K
17 WRIST PIN, CROSSHEAD TO LINK 3 M1525A001 M1525A001
18 CAP SCREW, FOR LINK 6 06106A040 06106A040
WASHER, LOCK 6 05454A025 05454A025
19 HOUSING, OIL SEAL 3 24959A001 24959A001
OIL SEAL 6 22835A004 22835A004
20 RETAINER, OIL SEAL HOUSING 3 24958A000 24958A000
SCREW, ALLEN 6 06106A034 06106A034
GASKET, SEAL HOUSING 3 05059A434 05059A434
KIT FOR REF. NO. 19 & 20 1 24648A000 24648A000
Catalog Number of Industrial Pump (Helical Gears) D35-8PP-2H D45-12PP
Item Description Qty. Eng. No. Eng. No.
21 SPRING, FOR RETAINER FOR OIL SEAL WIPER 3 M01643A000 M01643A000
22 GASKET, VELLUMOID, FOR OIL SEAL ASSEMBLY 3 05059A058 05059A058
23 DRAIN PLUG, MAGNETIC 3/4" 1 17481A002 17481A002
24 CAP SCREW, 3/4"-10 UNC x 3"
CYLINDER BODY TO GEAR CASE
4 06106A038 06106A038
LOCK WASHER, 3/4", FOR REF. 24 4 05454A003 05454A003
25 CAP SCREW, 5/8"-11 UNC x 2"
CYLINDER BODY TO GEAR CASE
4 19105A008 19105A008
26 CAP SCREW, PLUNGER TO PISTON ROD 3 16654A006 16654A006
27 FOLLOWER, FOR PLUNGER 3 † 20161A001 17537A000
28 O-RING, FOR PLUNGER FOLLOWER NOT REQ NOT REQ
29 PLUNGER CAP (FLAT) 3 † 13046A026 06086A011
30 O-RING, FOLLOWER TO BACKUP RING 3 05876A022 05876A022
31 RING, BACKUP, FOR PLUNGER 3 20162A001 17535A000
32 STUD, PLUNGER 3 20163A000 17533A000
33 CYLINDER BODY 1 18791F000 18791F000
34 NUT, 1/2”-13 UNC, FOR STUD REF. 36 6 19109A097 19109A097
35 NUT, 1/2”-13 UNC, FOR STUD REF. 37 6 19109A097 19109A097
36 STUD, FOR VALVE CAP CLAMPS 6 05659A548 05659A548
37 STUD, FOR CYLINDER CAP CLAMPS 6 05659A548 05659A548
38 CLAMP, VALVE CAP 3 M01517A000 M01517A000
39 CLAMP, CYLINDER CAPS 3 M01517A000 M01517A000
40 VALVE CAP, DISCHARGE 3 17390A000 17390A000
41 O-RING, FOR VALVE CAPS 3 05876A064 05876A064
42 CYLINDER CAP, SUCTION 3 17391A000 17391A000
43 O-RING, FOR CYLINDER CAPS 3 05876A065 05876A065
44 SUCTION VALVE AND SEAT COMPLETE 3 18925A000K 18925A000K
45 DISCHARGE VALVE AND SEAT COMPLETE 3 18925A001K 18925A001K
46 LID, OVER PLUNGERS 1 M01820A000 M01820A000
47 MACHINE SCREW, FOR LID OVER PLUNGERS 2 148850001 148850001
WASHER, STEEL, FOR REF. 47 MACHINE SCREW 2 05030A020 05030A020
48 DRAIN PLUG, 3/8” PIPE 3 06136A000 06136A000
49 DRAIN PLUG, 1” PIPE 3 06206A000 06206A000
† The parts above are used on newer D35-8PP-2H pumps. It can be differentiated by the follower and
cup. Use 06737A031 if your cup is all rubber and no fabric. The 13046A026 contains fabric and
rubber. Use 20161A000 & 05876A040 O-ring if your follower has an O-ring groove on the outside
diameter. The 20161A001 follower has no groove and does not need an O-ring groove on the
outside diameter. This does not apply to D45-12PP.

23833A034 06/04/14
9
D35-12D-2H
INDUSTRIAL PUMP PARTS LIST
41
45
39
35
37
42
43
44
48
49
26
28
27 29 30
31
32
21 22 19 17 15 13 14 23
12
11
40 38 36 34
33 46 7
47
24 25
20
9
10
812 3 4 518
16
6
Valve Clamp 11818A000 (3 req) Valve Clamp 11828A000 (3 req)
Retainer
11817A000 (3 req)
Retainer
11827A000 (3 req)
Locknut 11904A001 (3 req) Locknut 11904A001 (3 req)
Valve Spring
18462A000 (3 req)
Valve Spring
11029A000 (3 req)
Valve 17552A001(3 req) Valve 17553A001(3 req) Valve Seat 06272A000 (3 req) Valve Seat 06271A000 (3 req)
SUCTION VALVE AND SEAT COMPLETE NO. 11902A001K DISCHARGE VALVE AND SEAT COMPLETE NO. 11903A001K

23833A034 06/04/14 10
D35-12D-2H
INDUSTRIAL PUMP PARTS LIST
Catalog Number of Industrial Pump (Helical Gears) D35-12D-2H
Item Description Qty. Eng. No.
1 GEAR CASE 1 04663E000
2 GASKET, FOR GEAR CASE LID 1 06222C000
3 CAP SCREW, 5/16"-18 UNC x 7/8" 8 19100A005
4 LID, FOR GEAR CASE 1 04664B000
5 VENT AND OIL FILTER PLUG 1 17388A000
6 OIL GAUGE WITH O-RING 1 17360A001
7 O-RING, FOR OIL GAUGE 1 000790031
8 PINION SHAFT WITH HELICAL PINION 1 19816B000
SHIM PLASTIC FOR PINION SHAFT .003" THICK 4 05231A074
SHIM PLASTIC FOR PINION SHAFT .015” THICK 4 05231A075
9 CONE, BEARING, PINION SHAFT 2 05674A013
CUP, BEARING, PINION SHAFT 2 05675A009
10 CAP, OPEN, PINION SHAFT 1 04563A001
CAP, CLOSED, PINION SHAFT 1 04741B000
OIL SEAL, OPEN END OF PINION SHAFT 1 05710A017
CAP SCREW, 3/8"-UNC x 1", BEARING CAPS 18 19101A009
SEAL WASHER, FOR 3/8" CAP SCREWS 18 14946A003
11 CRANKSHAFT WITH HELICAL GEAR 1 19817C000
12 CONE, BEARING, FOR CRANKSHAFT 2 05674A015
CUP, BEARING, FOR CRANKSHAFT 2 05675A011
CAP, BEARING, FOR CRANKSHAFT 2 18466B001
SHIM PLASTIC, 4-17/32" I.D., 6-1/32" O.D., .003" THICK 6 05068A017
SHIM PLASTIC, 4-17/32" I.D., 6-1/32" O.D., .015" THICK 5 05068A015
13 CROSSHEAD AND PISTON ROD 3 06361B002
14 LINK AND BUSHING AND CAP SCREWS 3 11651C002
15 BUSHING, FOR LINK 3 B01619A001
16 BEARING, HALVES REG., FOR LINK 3 11647A012K
17 WRIST PIN, CROSSHEAD TO LINK 3 M01525A001
18 CAP SCREW, FOR LINK 6 06106A040
WASHER, LOCK 6 05454A025
19 HOUSING, OIL SEAL 3 24959A001
OIL SEAL 6 22835A004
20 RETAINER, OIL SEAL HOUSING 3 24958A000
SCREW, ALLEN 6 06106A034
GASKET, SEAL HOUSING 3 05059A434
KIT FOR REF. NO. 19 & 20 1 24648A000
21 SPRING, FOR RETAINER FOR OIL SEAL WIPER 3 M01643A000
Catalog Number of Industrial Pump (Helical Gears) D35-12D-2H
Item Description Qty. Eng. No.
22 GASKET, VELLUMOID, FOR OIL SEAL ASSEMBLY 3 05059A058
23 DRAIN PLUG, MAGNETIC 3/4" 1 17481A002
24 CAP SCREW, 3/4"-10 UNC x 3"
CYLINDER BODY TO GEAR CASE
4 06106A038
LOCK WASHER, 3/4", FOR REF. 24 4 05454A003
25 CAP SCREW, 5/8"-11 UNC x 2"
CYLINDER BODY TO GEAR CASE
4 19105A008
26 CAP SCREW, PLUNGER TO PISTON ROD 3 16654A006
27 NUT 3 17512A000
28 WASHER LOCK 3 06107A013
29 CUP 3 06086A010
30 FOLLOWER 3 17511A000
31 WASHER 3 05030A128
32 STUD, PLUNGER 3 17545A000
33 CYLINDER BODY 1 18782F000
34 NUT, 1/2”-13 UNC, FOR STUD REF. 36 6 19109A097
35 NUT, 1/2”-13 UNC, FOR STUD REF. 37 6 19109A097
36 STUD, FOR VALVE CAP CLAMPS 6 05659A059
37 STUD, FOR CYLINDER CAP CLAMPS 6 05659A059
38 CLAMP, VALVE CAP 3 17438A000
39 CLAMP, CYLINDER CAPS 3 17438A000
40 VALVE CAP, DISCHARGE 3 17390A000
41 O-RING, FOR VALVE CAPS 3 05876A064
42 CYLINDER CAP, SUCTION 3 17391A000
43 O-RING, FOR CYLINDER CAPS 3 05876A065
44 SUCTION VALVE AND SEAT COMPLETE 3 11902A001K
45 DISCHARGE VALVE AND SEAT COMPLETE 3 11903A001K
46 LID, OVER PLUNGERS 1 M01820A000
47 MACHINE SCREW, FOR LID OVER PLUNGERS 2 148850001
WASHER, STEEL, FOR REF. 47 MACHINE SCREW 2 05030A020
48 DRAIN PLUG, 3/8" PIPE 3 06136A000
49 DRAIN PLUG, 1" PIPE 3 06206A000
50 CYLINDER LINER 3 18806A003
PLUG, 1-1/4” PIPE 1 05022A047
PLUG, 2” PIPE 2 05022A048
O-RING, FOR CYLINDER LINER 3 05876A085