5
Series 26 - Model 26000 Multiple Gear Pump
Disassembly
Repair Information - Model 26000
Work in a clean area; cleanliness is extremely important when
repairing hydraulic pumps. Before disconnecting the lines,
clean port areas of pump. Disconnect hydraulic lines, removing
pump assembly from vehicle and plugging ports. Thoroughly
clean the outside of the pump. After cleaning, remove port
plugs and drain oil.
Disassembly of a Triple Pump
During disassembly keep all mating part in order and together.
1
Remove
key from drive shaft if keyed drive gear assembly
is used.
2
Put a
location mark across front plate, bodies, adapters
and backplate to assure proper reassembly.
3
Clamp pump in vise, shaft end up.Caution must be used as
excessive clamping pressure on pump housing may distort the
housing.
4
Remove
cap screws (eight each) and washer (four each).
5
Remove pump from vise and position pump so that the
shaft end is down. Now disassembly will continue from the
rear of the pump.
6
Start by tapping the backplate with a soft faced hammer
to remove from the third pump body. Remove
o-ring seal from
backplate.
7
To disassemble the
relief valve backplate and flow divider
backplate see page 15.
Parts List
Item
No.
Description
Qty.
1
Frontplate Assembly
1
2
Backplate
1
3
Body Assembly – Front
1
4
Body Assembly – Rear
1
5
Drive Gear Assembly
1
6
Idler Gear Assembly – Front
1
7
Idler Gear Assembly – Rear
1
~
8
Backup Gasket
A/R
~
9
Wear Plate
A/R
~
10
Seal
A/R
~
11
Shaft Seal
1
~
12
Washer
1
13
Cap Screw
8
~
14
O-ring
A/R
15
Adaptor Plate– Front
1
25
Key for Straight Shaft
1
26
Key – Rear Gear
1
28
Body Assembly – Center
A/R
29
Idler Gear Assembly – Center
A/R
44
Gear – Rear
1
45
Key – Center Gear
A/R
48
Adaptor Plate – Rear
1
49
Gear – Center
A/R
50
Washer
4
53
Plug Assembly
1
~
53A
O-ring
1
~
57
Plug
1
~
26000-902
Seal Kit for Double Pump
~
26000-903
Seal Kit for Triple Pump
A/R
– As Required
~
– Parts contained in seal kits
