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Changing Brake Bands on Differential Steering Units (click on first photo - use arrows)
![Original early OC-4 Steering Bands](https://static.wixstatic.com/media/1d99b8_4d5d494802c941b9a7c34320f2d360bc.png/v1/fill/w_432,h_344,al_c,q_85,enc_avif,quality_auto/1d99b8_4d5d494802c941b9a7c34320f2d360bc.png)
Like all HG's and OC-3's steering/brake bands, these are the loop-to-loop style, held to the steering cams with clevis pins.
![Brake band loop & steering cam](https://static.wixstatic.com/media/1d99b8_931c834bb12341a796dd4aaae727cf49.png/v1/fill/w_720,h_540,al_c,q_90,enc_avif,quality_auto/1d99b8_931c834bb12341a796dd4aaae727cf49.png)
The steering/brake band loops are fastened to each cam with a clevis pin, which is secured by a cotter pin. It can be really fiddly to grab hold of the cotter pin especially without a good tool for the job.
![Bent-nose pliers](https://static.wixstatic.com/media/1d99b8_181d80aa1604441da7ba193bd5b887d1.png/v1/fill/w_675,h_581,al_c,q_90,enc_avif,quality_auto/1d99b8_181d80aa1604441da7ba193bd5b887d1.png)
I have found this tool perfect for removing the small cotter pins and pushing out the clevis pins. It's the only tool you'll need for this job, apart from a socket to take off the rear transmission cover.
![Removing rear clevis pin...](https://static.wixstatic.com/media/1d99b8_76552530ab5c4409bb919cca21b6710d.png/v1/fill/w_600,h_593,al_c,q_85,enc_avif,quality_auto/1d99b8_76552530ab5c4409bb919cca21b6710d.png)
After pulling out the cotter pin, use the bent-nose pliers to push out the clevis pin (outside to inside).This releases the rear steering/brake band loops.
![Rotate cam to reveal front pins](https://static.wixstatic.com/media/1d99b8_33d3fdb943024201a9c41d92c6749a97.png/v1/fill/w_518,h_600,al_c,q_85,enc_avif,quality_auto/1d99b8_33d3fdb943024201a9c41d92c6749a97.png)
Rotate the steering cam clockwise to allow access to the cotter pin which releases the front clevis pin. Note: Loosening or disconnecting the brake adjustment rods, will help rotate the cam as far as possible.
![Front clevis pin comes out](https://static.wixstatic.com/media/1d99b8_6e5aa380158d46abb8938237e250e940.png/v1/fill/w_506,h_675,al_c,q_85,enc_avif,quality_auto/1d99b8_6e5aa380158d46abb8938237e250e940.png)
Again, use the bent-nose pliers to remove the cotter & clevis pins to release the front steering/brake band loops.
![Steering/Brake Band comes out](https://static.wixstatic.com/media/1d99b8_6ddf7c76746240ffbe5749b33b9f671d.png/v1/fill/w_588,h_713,al_c,q_90,enc_avif,quality_auto/1d99b8_6ddf7c76746240ffbe5749b33b9f671d.png)
Now, it's an easy job to simply 'rotate' the steering/brake bands out of the transmission case. Repeat on the other side, and reverse to re-install new ones.
![Worn steering/brake bands](https://static.wixstatic.com/media/1d99b8_f4de2f2002264d14945a71203589bf41.png/v1/fill/w_713,h_535,al_c,q_90,enc_avif,quality_auto/1d99b8_f4de2f2002264d14945a71203589bf41.png)
Hopefully they don't look like this pair! These exposed brass rivets can cause serious damage to the brake drums.
![Brake band rivet scouring...](https://static.wixstatic.com/media/1d99b8_8f26c742c036437bba4ecfbb49ffb9e4.png/v1/fill/w_535,h_792,al_c,q_90,enc_avif,quality_auto/1d99b8_8f26c742c036437bba4ecfbb49ffb9e4.png)
The brake drums are reasonably forgiving in the short-term if not abused, but severe scouring can result in complete failure!
![Relined Steering/Brake Bands](https://static.wixstatic.com/media/1d99b8_b6b4800a77f84e649ed650ab40a31647.png/v1/fill/w_432,h_274,al_c,q_85,enc_avif,quality_auto/1d99b8_b6b4800a77f84e649ed650ab40a31647.png)
These are the new linings we use today. We supply a pad & rivet set so that you can rivet them yourself, or we can re-line them for you if you send them in. Note: there are some minor differences between steering/brake bands from different models and/or age, so if you call, text, or email, be prepared to answer some questions (see next schematic diagram)
![Fitting Your Own Brake Linings](https://static.wixstatic.com/media/1d99b8_09aadc5b22ba47239112d8f9921a0c12.png/v1/fill/w_612,h_558,al_c,q_85,enc_avif,quality_auto/1d99b8_09aadc5b22ba47239112d8f9921a0c12.png)
Caution: Cletrac to Oliver HG steel bands came in two different gauges, which in turn took linings of different thickness. Either is fine in your machine (thin+thin or thick+thick), but you should not mix and match. Planetary and clutch-steering Oliver OC-4 bands are slightly different lengths.
![Re-lined Steering/Brake Bands](https://static.wixstatic.com/media/1d99b8_7c45c814a3e44b13a2f7968e5acee254.png/v1/fill/w_720,h_559,al_c,q_90,enc_avif,quality_auto/1d99b8_7c45c814a3e44b13a2f7968e5acee254.png)
Note: steering/brake linings on planetary-steering vs. 'Spot-Turn (clutch) steering are slightly different in length.