Eaton Model 33 / 39 / 46 Series 1 Parts Breakdown
Complete component breakdown for the Eaton Series 1 Model 33, 39 and 46 heavy duty hydrostatic variable pumps, taken from Eaton parts list 6-608. Models 33 and 39 share almost every part. Model 46 differs in the rotating group, piston slipper set, slipper retaining plate, cylinder barrel kit, bearing plate, valve plate and end cover. Rows that are model specific say so. Reference numbers match the exploded view above.
84 parts across 9 categories
Source: Eaton parts list 6-608, Hydrostatic Variable Pumps, Series 1, Models 33 thru 64
Position numbers in the parts list below correspond to callouts on the diagram above. Tap a diagram to zoom in.
Seal Kits and Overhaul Kits 5 parts
KIT-01
Fits Model 33, 39 and 46: sealing overhaul kit, variable PUMP
Does not include the drive shaft seal, which is a separate kit.
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KIT-02
Fits Model 33, 39 and 46: sealing overhaul kit
Send us your product number and we will confirm whether your unit takes 990088 or 990089.
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Ref 1
Fits Model 33, 39 and 46: kit, shaft seal (face seal type)
The shaft seal is never inside the sealing overhaul kit. 990231 is the face seal assembly used on pumps built before September 1999.
Qty 1
SEAL-99A
Fits Model 33, 39 and 46: shaft seal kit, lip seal type
For units built after 1999. Eaton changed from the face seal to a lip seal in September 1999.
Qty 1
Drive Shafts, Ref 10 8 parts
Ref 10-C
Model 33 and 39 only: shaft, 1-3/8 in. tapered, splined drive end for B-pad charge pump
Not offered on Model 46.
Qty 1
Ref 10-E
Fits Model 33, 39 and 46: shaft, 14 tooth 12/24 pitch, splined drive end for B-pad charge pump
Qty 1
Ref 10-G
Model 33 and 39 only: shaft, 21 tooth 16/32 pitch, splined drive end for B-pad charge pump
Not offered on Model 46.
Qty 1
Rotating Group, Model 46 differs 13 parts
Ref 15 (M33/39)
Model 33 and 39 only: sub-assembly, piston and slipper
Nine per pump, supplied as a matched set. The Model 46 part is 104199.
Qty 9
Ref 15 (M46)
Model 46 only: sub-assembly, piston and slipper
Nine per pump, supplied as a matched set. The Model 33 and 39 part is 101073.
Qty 9
Ref 16 (M33/39)
Model 33 and 39 only: plate, slipper retaining
The Model 46 part is 104211.
Qty 1
Ref 20 (M33)
Model 33 only: kit, cylinder barrel
Printed as 909412 in Eaton parts list 6-608. The rest of the row runs 990412, 990413, 990414, so this looks like a misprint for 990412. Confirm with us before ordering.
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Valve Plate, Ref 22, model and rotation specific 8 parts
Mounting Flange and Bearings 9 parts
Swashplate and Trunnion 8 parts
Ref 12 (M33)
Model 33 only: sub-assembly, swashplate
The Model 39 and 46 swashplate is 104226.
Qty 1
Ref 12 (M39/46)
Model 39 and 46 only: sub-assembly, swashplate
The Model 33 swashplate is 104301.
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Ref 32 (M33)
Model 33 only: shim pack, trunnion
Printed as 9900012 in Eaton parts list 6-608, while Models 39 and 46 read 990012. This looks like a misprint. Confirm with us before ordering.
Qty 2
Housing, Servo and Controls 12 parts
Ref 23
Fits Model 33, 39 and 46: control option
Manual, electric and hydraulic controls each have their own parts list. Send your product number and we will identify the control.
Qty 1
End Cover and Check Valves 20 parts
Ref 47 (M33/39 C61 tap)
Model 33 and 39 only: end cover, 1 inch Code 61 with pressure tap
Qty 1
Ref 47 (M33/39 C61 IPOR)
Model 33 and 39 only: end cover, 1 inch Code 61 IPOR sub-assembly
Qty 1
Ref 47 (M33/39 C62 IPOR)
Model 33 and 39 only: end cover, 1 inch Code 62 IPOR sub-assembly
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Ref 47 (M33/39 C62 tap)
Model 33 and 39 only: end cover, 1 inch Code 62 with pressure tap
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Charge Pump, Ref 54 1 part
Ref 54
Fits Model 33, 39 and 46: charge pump
Standard, A-pad and B-pad charge pumps each have their own parts list. A B-pad charge pump also changes which drive shaft the pump takes, see Ref 10.
Qty 1
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