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.
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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.
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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.

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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.

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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.

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dust-shield

Complete assembly, repaired and ready for installation.

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If you have a project like this and need help, contact me. Thanks, Tim.

Swinger 200D Wheel Loader
Categories: Projects

7 Comments

Heath austin · February 15, 2017 at 12:02 am

I have a twin to that machine. I bought it with a bad engine. Currently repaitng this machine while the engine is out. I want to convert the loader over to skid steer tatch and use it to feed cattle. Have project photos if i figure out how to post them.

    Tim Kohler · February 15, 2017 at 3:53 pm

    What engine do you have? Swinger used a few different engines.

Rick Cook · August 23, 2017 at 6:01 pm

How did you get the yoke out of the transfer case, mine needs a bearing and seal. I see you removed the entire axle do I have to do that to get the face off the case?

    Tim Kohler · August 23, 2017 at 6:24 pm

    Socket and extension to remove pinion nut. Unbolt all the 5/16 bolts around the cover and remove the yoke, cover and gear(supported on yoke) as an assembly. While you are under the machine, make sure the three t-case mounting bolts are tight.

      Rick Cook · August 29, 2017 at 2:40 pm

      Ok, got the front cover off, is there a seal on the rear end side between the transfer case and rear end?

        Tim Kohler · August 29, 2017 at 3:49 pm

        The original Dana 60 pinion seal has been removed for the Swinger application. Instead, there is an “O” ring between the rear transfer case half and the axle. The O ring seals within the pinion seal bore of the Dana 60. The O rings is probably not the main source of your leak. The pinion seal probably is. Remove the gear from the yoke/shaft and remove the yoke/shaft from the front cover and replace the seal. The t-case cover location is determined by the pinion. When re-assembling, tighten the pinion nut 1st, then the t-case cover bolts. The whole t-case assembly is located by the pinion and will rotate within the axle’s pinion seal bore. The only thing preventing the t-case from rotating around the pinion seal bore are the three mounting t-case mounting bolts. Make sure they are tight.

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