This Swinger model 200D wheel loader has a pinion seal leak. The wheel loader was built in Barnsville, MN by Dynamic industries in 1979. Swinger was later sold to NMC Wollard of Eau Claire WI and are still produced today.
With the canopy removed, I am able to lift it on the hoist for easy service. It is quite an involved procedure to replace the pinion seal so I decided to remove the assembly from the machine for complete disassembly, inspection and repair.
The axle is an industrial Dana 60, 6.17 ratio with a Trac-Lok differential. It is very similar to the on highway Dana 60’s used in 3/4 and 1 ton trucks. The transfer case design is quite clever. It locates off of the Dana 60 pinion seal bore and is mounted in a 3 sided 1/4″ “box”, welded to the axle housing. The original yoke has been replaced with a lengthened yoke that has an additional bearing supporting it on the outboard end. Between the front pinion bearing and the added ball bearing it supports a gear.
A common issue is failure of the transfer case mounts. There are 3, 1/2″ bolts mounting the transfer case to the “box”. They handle all the torque of the tranfer case wanting to twist when driving the front and rear axles. The ear for the lower transfer case mounting bolt is broken on this one.
A new method of mounting has been engineered. A 1″x 2″ rectangular steel bar has been mounted in place of the broken cast iron mounting ear.
The original yoke did not have a dust shield. The seal is unprotected and located in a location prone to damage. I made one from a spare tire hold down and welded it onto the yoke.
Complete assembly, repaired and ready for installation.
If you have a project like this and need help, contact me. Thanks, Tim.
