Kent
As for the gaskets, good old silicone can be used, no idea on the seal. Is it the rear main seal? or just a std round seal with a spring inside?
I'd be temped to contact perkins directly, or try a few dealers (perkins and bobcat) someone may have old stock around even if its discontinued. Often when parts are hard to find it keeps a really dedicated dealer to keep searching out the usual channels
Do you know the model of the engine?
Regards
Ken
bobcat.com historical specs put it as follows
[TR]
[TD]
LOADER SPECIFICATIONS [/TD]
[/TR]
[TR]
[TD]Model
[/TD]
[TD]843
[/TD]
[/TR]
[TR]
[TD]First Year of Production
[/TD]
[TD]1983
[/TD]
[/TR]
[TR]
[TD]Last Year of Production
[/TD]
[TD]1986
[/TD]
[/TR]
[TR]
[TD]
[/TD]
[/TR]
[TR]
[TD]Engine Model
[/TD]
[TD]4.154/200
[/TD]
[/TR]
[TR]
[TD]
[/TD]
[/TR]
[TR]
[TD]Engine Fuel
[/TD]
[TD]Diesel
[/TD]
[/TR]
[TR]
[TD]Engine Cooling
[/TD]
[TD]Liquid
[/TD]
[/TR]
[TR]
[TD]Displacement
[/TD]
[TD]153.9 cubic in
[/TD]
[/TR]
[TR]
[TD]Horsepower
[/TD]
[TD]54 HP
[/TD]
[/TR]
[TR]
[TD]Number of Cylinders
[/TD]
[TD]4
[/TD]
[/TR]
[TR]
[TD]Operating Weight
[/TD]
[TD]6480 lbs
[/TD]
[/TR]
[TR]
[TD]Rated Operating Capacity (SAE)
[/TD]
[TD]1700 lbs
[/TD]
[/TR]
[TR]
[TD]Tipping Load
[/TD]
[TD]3420 lbs
[/TD]
[/TR]
[TR]
[TD]Travel Speed - Low
[/TD]
[TD]-6.3 mph
[/TD]
[/TR]
[TR]
[TD]Travel Speed - High
[/TD]
[TD]-6.3 mph
[/TD]
[/TR]
[TR]
[TD]Pump Capacity
[/TD]
[TD]16.1 GPM
[/TD]
[/TR]
[TR]
[TD]Hydraulic Pump Pressure
[/TD]
[TD]2125 psi
[/TD]
[/TR]
[TR]
[TD]Length
[/TD]
[TD]131.4 in
[/TD]
[/TR]
[TR]
[TD]Width
[/TD]
[TD]62.4 in
[/TD]
[/TR]
[TR]
[TD]Height
[/TD]
[TD]80.4 in
[/TD]
[/TR]
[TR]
[TD]Height to Bucket Hinge Pin
[/TD]
[TD]119.6 in
[/TD]
[/TR]
[TR]
[TD]Dump Angle @ Maximum Height
[/TD]
[TD]37 deg
[/TD]
[/TR]
[TR]
[TD]Ground Clearance
[/TD]
[TD]8.4 in
[/TD]
[/TR]
[TR]
[TD]Angle of Departure
[/TD]
[TD]28 deg
[/TD]
[/TR]
[TR]
[TD]Rollback Angle
[/TD]
[TD]25 deg
[/TD]
[/TR]
[TR]
[TD]Wheelbase
[/TD]
[TD]38.6 in
[/TD]
[/TR]
[TR]
[TD]Wheel Tread
[/TD]
[TD]n/a
[/TD]
[/TR]
[TR]
[TD]Vehicle Steering
[/TD]
[TD]Dual Levers
[/TD]
[/TR]
[TR]
[TD]Hydraulic (Lift and Tilt)
[/TD]
[TD]Dual Pedals
[/TD]
[/TR]
[TR]
[TD]Cylinders: Lift - Bore
[/TD]
[TD]2.25 in
[/TD]
[/TR]
[TR]
[TD]Cylinders: Lift - Rod
[/TD]
[TD]1.5 in
[/TD]
[/TR]
[TR]
[TD]Cylinders: Lift - Stroke
[/TD]
[TD]33.5 in
[/TD]
[/TR]
[TR]
[TD]Cylinders: Tilt - Bore
[/TD]
[TD]3.25 in
[/TD]
[/TR]
[TR]
[TD]Cylinders: Tilt - Rod
[/TD]
[TD]1.5 in
[/TD]
[/TR]
[TR]
[TD]Cylinders: Tilt - Stroke
[/TD]
[TD]17.95 in
[/TD]
[/TR]
[TR]
[TD]Tire Size
[/TD]
[TD]8.25x15
[/TD]
[/TR]
[TR]
[TD]Auxiliary Hydraulics
[/TD]
[TD]std
[/TD]
[/TR]
[TR]
[TD]Operating Lights
[/TD]
[TD]std
[/TD]
[/TR]
[TR]
[TD]Parking Brake
[/TD]
[TD]std
[/TD]
[/TR]
[TR]
[TD]BICS System (Interlock)
[/TD]
[TD]n/a
[/TD]
[/TR]