1978 f100 front caliper frozen. Retaining Pin will nor release

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1973-1979 Ford F-Series

Repair guides and support for the sixth generation of Ford F-Series trucks. Models include the F100, F150, F250, F350, and others.

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Chincoteaguer @islander

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发帖于: 2017年11月17日

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1978 f100 front caliper frozen. Retaining Pin will nor release

Is there a technique in removing the retaining pin from brake caliper? Driver's side punched out with a moderate amount of effort but the passenger side will not release. Passenger side caliper is frozen and wheel will not roll. C clamp against pad does not retract cylinder.

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My answer to the question is that the slide pin can be removed by using a punch and a hammer but the kicker is that the slide pin can be punched from the inner side (from the tie rod) outward or from the outer side inward. I punched from the inner side outward on the driver side caliper with success but it is the dumb way. Much easier punching from the outside inward. Did this on the passenger's side and it was easy.

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Blake Klein @blakeklein

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Hi Chincoteaguer,

I would use a lot of penetrating oil on the pin that will not come out then use the pin that you removed from the other side as a punch to get the stuck pin out. Replacing the pins will be necessary and a good idea so they do not get stuck again.

Also here is a video that could help

https://youtu.be/VkLyaMjL_wo?t=1m55s

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Thanks Blake. See my answer above.

I've done enough shade tree fixit projects to know that there are tricks or techniques that experienced mechanics use to get things done. In this case my experience tells me that one should punch the slide pin from outside inward. Not obvious to me at first since the tie rod nut seems to prohibit movement inward. Now have the calipers in hand and on myway to the Auto Parts store.

由 Chincoteaguer 完成的 2017年11月18日

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My answer to the question is that the slide pin can be removed by using a punch and a hammer but the kicker is that the slide pin can be punched from the inner side (from the tie rod) outward or from the outer side inward. I punched from the inner side outward on the driver side caliper with success but it is the dumb way. Much easier punching from the outside inward. Did this on the passenger's side and it was easy. — Chincoteaguer
Thanks Blake. See my answer above.

I've done enough shade tree fixit projects to know that there are tricks or techniques that experienced mechanics use to get things done. In this case my experience tells me that one should punch the slide pin from outside inward. Not obvious to me at first since the tie rod nut seems to prohibit movement inward. Now have the calipers in hand and on myway to the Auto Parts store. — Chincoteaguer

Polo @polo128 声誉积分: 1 · Answer 1 · 2023-10-14T11:27:00-07:00

Here are some steps you can try to remove the retaining pin:

Apply Penetrant Oil: If the pin is stuck, spray it with some penetrant oil and let it sit for a few minutes before trying again.
Use Tools: You can try gently tapping them with a hammer or using a pair of needle-nose pliers/wrenches to pull the pin out from the backside of the caliper.
Heat and Beat: If the pin is rusted and stuck, you might need to apply heat to the area around the pin and then tap it out.
Vise Grip Method: Another method is to use needle nose vise grip clamped onto the pin from the rear as tight as you can get it. Then give the handle of the vise grip a tap with a hammer and the pin should loosen.

Please remember to be careful when working with these components as they can be under high pressure. If these methods don’t work, it might be best to consult with a professional mechanic.

As for the frozen caliper, it’s possible that the caliper piston is seized. If a C-clamp isn’t working to retract the piston, you may need to replace the caliper.

Another helpful links:

https://www.fordshopmanual.com/ford-truc...

@polo128 looking at your links as well as the writing style, this looks like you used AI to formulate your answer. If you are using AI, you do need to inform everyone on here about this. Anybody using AI needs to be transparent and will be monitored for ethical use of this technology. — oldturkey03

1973-1979 Ford F-Series

1978 f100 front caliper frozen. Retaining Pin will nor release

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