◊ Learn more about Aircraft Wheel and Brake Division (AWBD) on the division homepage parker.com/cleveland
1) What type of help does Cleveland Wheel & Brake provide and how is it different from the Parker Aerospace Customer Response Center?
Parker’s Cleveland Wheel & Brake provides information and support only for the division’s products. You can contact the Cleveland Wheel & Brake technical support hotline by calling 800-272-5464 and support is also available online at parker.com/Cleveland. Parker Aerospace operates a Customer Response Center for commercial and military aftermarket customers (Parker.com/CSO), which is separate from Cleveland Wheel & Brake technical support.
2) Where can I find the STC for the kits to convert McCauley to Cleveland?
Converting from the early McCauley equipment to current Parker Cleveland Wheels & Brakes requires only a logbook entry. The upgraded wheels and brakes are approved by Cessna and listed in the aircraft Illustrated Parts Lists.
3) What is the kit number to convert my early McCauley wheels and brakes to Parker Cleveland Wheels & Brakes?
The kit number will vary depending upon the model and/or serial number of the aircraft. Contact a Textron service center or sales office for a copy of Service Bulletin SEB00-5, which includes Service Kit SK182-120. You can also call Parker’s Cleveland Wheel & Brake technical support hotline at 800-272-5464 for assistance identifying the correct kit for your model and serial number.
4) I put new linings and discs on my aircraft and now I can’t turn the wheel. What’s the problem? Can you check dimensions to see if I have the right parts?
Yes, checking the part numbers is the first step. Once verified, the common field issue that causes this situation is over torqueing the back plate tie bolts, which ultimately causes depressions around the bolt holes. Lay a straight edge across the cylinder housing bolt holes. If you can insert a .005 inch, or larger, feeler gauge underneath the straight edge, the cylinder housing should be replaced. The deeper the depressions around the bolt holes, the more severe the condition to the point of causing the back plate to rub on the tire. Refer to AWBCMM0001 Table 101 Brake Assembly Troubleshooting, Item 2. Brake Drag, as well as Appendix A, A3 for further discussion about this condition.
5) Where can I find the latest Product Catalog and technical information for your wheels and brakes?
The latest revisions of the Product Catalog, Component Maintenance Manual, and Technician’s Service Guide can be found at: www.parker.com/cleveland. Click on the Support Resources icon located to the right of the Technical Literature banner to access these documents. You can also key in the name of the desired document in the search bar for the quickest access.
6) Q: Can I change my hydraulic system to DOT fluid?
The majority of Parker’s Cleveland Wheels & Brakes are designed to utilize red oils, MIL-PRF-83282 or MIL-H-5606. A few of the applications use Skydrol fluid with one application using automotive. Ensure that you are using the proper fluids at all times to avoid degradation of the o-rings. For handy reference, refer to the Technician’s Service Guide located at www.parker.com/cleveland. Click on the Support Resources icon located to the right of Technical Literature to access these documents. You can also key in the name of the desired document in the search bar for the quickest access.
7) How can I tell if my brake lining is organic or metallic?
The organic linings are seated to the plates using a rivet that goes through the lining segment to complete the installation. The metallic linings are seated onto locator pins that are preinstalled in the back and pressure plates, therefore the lining segment has no visible holes going through it.
8) My brake is dragging after I changed the linings and disc. What’s the part number of the shim that goes between the back plate and cylinder housing to fix this?
Adding shims to a brake assembly to alleviate dragging brakes is a violation of the TSO approval. Bottom line, if the bill of material doesn’t call for a shim, then don’t install one. Likewise, if the bill of material calls for a shim, make sure it’s there. Insulating shims are used in brake assemblies with higher gross weights and should be replaced on condition. Refer to Question 3 for the condition that could be causing the brake drag.
9) My brakes are rattling and it’s very noticeable; it sounds like they are going to fall off. What can be causing this?
Check the holes in the torque plate where the brake assembly anchor bolts float in and out during brake actuation. Wear or elongation of the torque plate holes can cause the brake to move from side-to-side and create a rattling noise. The torque plate will have to be replaced if this condition is found.
10) I’m not getting good life from my linings. They are cracked and falling apart. I think I need a bigger brake or one with metallic linings.
Do not baby the brakes when landing. Evidence of a scored brake disc and heavily deteriorated linings point to improper conditioning of the linings. The lining material is designed to provide the best performance and life by continually heating the friction material when landing.
11) What organic lining is used with McCauley brakes?
The 066-30026 is the only linings for all McCauley brake assemblies.
12) Are Cleveland discs and linings interchangeable with McCauley discs and linings?
No, the through-hole locations/patterns on the McCauley discs and linings are offset to Cleveland and therefore not interchangeable.
13) What’s the difference between the 199-62 and 199-62A kits?
The 199-62 kit is a three-bolt wheel; the 199-62A is a six-bolt wheel. Both kits have the same static rating.
14) Do you have a conversion kit for Beechcraft King Air 300/350?
We don’t have a conversion kit for the main wheels and brakes at this time. The 199-126 nose wheel kit is FAA and EASA approved for the model 300.
15) Can you sleeve a brake cylinder piston bore?
Cleveland has no provisions for sleeving any piston bore cylinders.
16) What is the kit number for the Piper Cub with a 1.25-inch axle size?
The 199-07100 has an aluminum brake housing with magnesium wheels. The 199-07101 is aluminum for the brake cylinders and wheel halves.
17) What is the conversion kit part number for the Piper Cub using a 1.5-inch axle?
The 199-276 kit is exclusive to Univair who holds the supplemental type certificate (STC) for this application.
18) What is the conversion kit part number for the Aztec upgrade?
The kit number is 199-63 but is proprietary to Piper under their part number 760-986.
19) What rivets are used with the 066-10500 and 066-10600 linings?
The rivet for both linings is 105-00200.
20) Are cylinder housing bleeders and fitting interchangeable?
In most cases, the cylinder housing bleeders and fittings are not left-hand and right-hand specific and should be changed to accommodate each side of the aircraft.
21) Should I remove the paint from the disc before installation?
No, the paint is the protective barrier used to delay corrosion of the steel and should never be removed before installing the disc.
22) There’s a crack in my outer wheel half – can I weld it?
No, a cracked wheel half is cause for replacement under any conditions.