Replica Pack 75mm Howitzer Wheel & Hub Upgrade
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- G-Colonel
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Replica Pack 75mm Howitzer Wheel & Hub Upgrade
A while back, a year or so, I posted some photos of my Dad's replica pack 75mm Howitzer next to the real one we refurbished for the Springfield Veterans Memorial in Oregon.
The replica looks real good but one thing still needs to be addressed and that is the wheels and hubs. This last April I was lucky enough to acquire a set.
I'm now in the process of painting the wheels, they already been sand blasted, and rebuilding the hubs. For this I need new seals, races and bearings. Here are the numbers for anyone restoring hubs in the future.
SEALS:
TCM 318454SA-H
3.188 X 4.501 X .438
OUTER HUB
RACE:
Timkin 39412
BEARING:
Timkin 39250
INNER HUB
RACE:
Timkin 394-A
BEARING:
Timkin 395-S
More to come. Also, there are NOS complete hub assemblies on eBay right now for just under $250 each.
Steve A.
The replica looks real good but one thing still needs to be addressed and that is the wheels and hubs. This last April I was lucky enough to acquire a set.
I'm now in the process of painting the wheels, they already been sand blasted, and rebuilding the hubs. For this I need new seals, races and bearings. Here are the numbers for anyone restoring hubs in the future.
SEALS:
TCM 318454SA-H
3.188 X 4.501 X .438
OUTER HUB
RACE:
Timkin 39412
BEARING:
Timkin 39250
INNER HUB
RACE:
Timkin 394-A
BEARING:
Timkin 395-S
More to come. Also, there are NOS complete hub assemblies on eBay right now for just under $250 each.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
Made some progress today. I got the wheels painted and started to disassemble the hubs. I got all new seals, bearings and races on order and cost just under $300.00. I am in need of two thing if anyone can help. I'm missing one C clip to hold the seals in and need some photos of the pin that hold the hubs on the axles. If anyone can help me it is greatly appreciated.
Steve A.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
- mbatvburg
- Sergeant Major of the Gee
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
I used the pin from one of these on the original I cleaned up
http://www.mscdirect.com/product/details/71530836
http://www.mscdirect.com/product/details/71530836
Brendan
I've had a jeep or two
I've had a jeep or two
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
I was thinking of this. I did check out my local fastener place and they don't carry anything like that in the size needed. Will continue looking.mbatvburg wrote:I used the pin from one of these on the original I cleaned up
http://www.mscdirect.com/product/details/71530836
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
I am in need of one C-clip. Does anyone have a spare they can part with?
I went to the local bearing house. They can get me a modern equivilant but it is a special purchase and I would have to buy at least 30 of them.
Steve A.
I went to the local bearing house. They can get me a modern equivilant but it is a special purchase and I would have to buy at least 30 of them.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
I got the hubs all torn down and cleaned.
Some new parts.
Sand blasted and ready for paint
Primed
Steve A.
Some new parts.
Sand blasted and ready for paint
Primed
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
All parts now painted. Now waiting for the rest of the bearings to come in and the new axle shafts made to adapt the original hubs.
Steve A.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
I made some more progress on the hubs. I found a source for the C-clips or the proper description is internal retaining rings. The company is Prospect Fastener and the part number is ND450. I found a lot of 5 pieces on eBay so I got those. they look identical and fit perfect.
The next item on the list of things to do is making new axle stubs.
Steve A.
The next item on the list of things to do is making new axle stubs.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
The next step is to make new axle stubs. My mechanic Matt will be doing this. He also does some custom machining. I gave him the inner hub piece to get the axle dimensions needed but I'm very lucky to have a forum member that lives just north of me that has a restored pack 75mm howitzer. He was kind enough to remove one wheel so that Matt could get actual axle measurements. This was a big help, Thanks Robin!! With measurements in hand Matt has what he needs to make the new axle stubs.
The next photo is of the transverse wheel and bellows. I want to try and replicate this. The wheel is 8" in diameter, 1/2" thick and has 5 spokes.
That night I found this on eBay. It has all the correct dimensions so I got it to go in the cannon.
That's all for now.
Steve A.
The next photo is of the transverse wheel and bellows. I want to try and replicate this. The wheel is 8" in diameter, 1/2" thick and has 5 spokes.
That night I found this on eBay. It has all the correct dimensions so I got it to go in the cannon.
That's all for now.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
It's been a while since my last update. The project is almost done now. I took some measurements of the leather dust boot for the traversing on the axle and had one made. I did run into a slight problem though. I used the original outside diameter of the leather rings with the outside diameter on the axle which is a trailer axle, 3 inches. This didn't leave much room for expansion so I had to enlarge the bellows of the boot some to make it function right. The cost was very reasonable. Sitting on top is the hand wheel I found.
I checked in with my mechanic, Matt, the other day and both new axle stubs are done and one installed. I also put one of the hubs back together with all new bearings, races and seals. It took about two tubes of grease for each hub when done. I just love working with grease, not.
New axle stub
Stub installed.
Getting other side ready for new stub.
Rebuilt hub and new axle stub.
My next visit I will be touching up the paint, install the dust boot and mount the hubs and wheels. My Dad's birthday in in two weeks and turns the big 70. I hope to surprise him with cannon with the new hubs and wheels. It was last year that I got him the hubs and wheels for his birthday. More to come.
Steve A.
I checked in with my mechanic, Matt, the other day and both new axle stubs are done and one installed. I also put one of the hubs back together with all new bearings, races and seals. It took about two tubes of grease for each hub when done. I just love working with grease, not.
New axle stub
Stub installed.
Getting other side ready for new stub.
Rebuilt hub and new axle stub.
My next visit I will be touching up the paint, install the dust boot and mount the hubs and wheels. My Dad's birthday in in two weeks and turns the big 70. I hope to surprise him with cannon with the new hubs and wheels. It was last year that I got him the hubs and wheels for his birthday. More to come.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
- Tankdriver
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
Looking REALLY good. You have a lot of time and money invested in this. But it will be really hard to tell it from a original one.
Good work.
Good work.
1943 WC63...1942 M3 Autocar...1944 M3A1 Diamond T...1942 57mm Anti-Tank
Have owned...M5A1 Stuart
Have Restored...M20
MVPA Member...President West TN Military Vehicle Collectors... https://wtmvc.shutterfly.com/
Have owned...M5A1 Stuart
Have Restored...M20
MVPA Member...President West TN Military Vehicle Collectors... https://wtmvc.shutterfly.com/
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Re: Replica Pack 75mm Howitzer Wheel & Hub Upgrade
Well, today is April 19 and my Dad's Birthday. The axle project is done. My mechanic Matt did a fantastic job an machining new axles for this project. Here are the finished photos. Due to the tight space in his shop I was unable to get any good side shots. I will post some when I can.
Steve A.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
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