D7 Cat D7D 17A Dozer

D7 Cat Drew Whisenhunt rebuilt final drive in 2012. Bearings were pulverized and the final drive case was cut open by the gear being cocked to one side and rubbing the case all the way through. Also honed out the track adjuster cylinder and reworked the piston rings in it, as it would not hold the track tension before.My son did this! This is his first dozer he had never worked on one or ran one until this project cam along. This was a major repair for his first time dealing with a dozer, I guess it worked!!

[@rms2365]

Be a hoot to drive that baby....Cats seem to run and run with a little maintenance,last for year’s. So much power with around 1200 rpm I’m told.

[@ippokratis1976]

MY GRANDFATHER WAS OWN ON MODEL LIKE THIS 1953 CAT D7 3T WITH ANGLE BLADE AND UDRAULIC LIFT ON BLADE
CATERPILLARR IS THE MACHINE FOR ALL THE JOBS

[@michaelconlon3243]

Tell your pilot to open her up and she will change gears easer when she's warm your clutch brake might need adjusting, driving those old Cats easy Kills em Cheryl, -:)

[@raymondquave1237]

I grew up on a cat series 3 T d7 cable rig dry clutch type then moved on to the 17 a D 7 cable rigs then to 7 E turbo hydraulic power shift now have d 7 g power shift hydraulic with a towing winch an tried a D 8 H but a little clumsy compared to the d 7 ben in business clearing land close to 55 years still going lol

[@rdarockies]

Hey Local, thanks for the heads up on that. I'll tell Drew to "set his purse down" and hit that thing. He's been babyin' it you say? Congrats on keeping your pair crawling! Friends, Cheryl

[@rdarockies]

Thanks for the advice, I adjusted the flywheel brake and now I can easily shift gears. I also cranked it up and worked it harder and it got a hot. Now I need to figure out the thermostat deal.

[@josebravo8941]

me gusta la maquinaria a marilla

[@whizzo55]

Cool Beans! Don't know how you did the repairs to the beast by your lonesome. That's my boy!

[@localcrew]

Sounds as if the flywheel brake isn't working too well. The fiber shoe for that isn't expensive. Heavyquip probably has it. Tell that boy to pull the "Loud Lever" down and let 'er rip. That motor will start slobbering oil out of the stack if it runs slow and cool like this. Make sure that you have two "temperature regulators" (thermostats) in place and that they work at the correct temperature. Nice job on the repair. It is not easy keeping these machines running. I have two of them.

[@wilmamcdermott3065]

Its probably cold oil has to warm up so so clutch will stop cold oil couples it like a torque converter

[@wilmamcdermott3065]

Good looking old girl

[@4x4RescueThunderBay]

How old was he when he did this?
Great story! This would be a dream come true for me, especially with some mecahnical problems and all.. Are you making a lot for a house here?

[@rdarockies]

He was in mid 30’s. I think he was going to make a pond that time. But now he does have to make a pad for a house, or cabin I should say.

[@graemekemp1462]

Run full throttle to stop bores glazing

[@SquawMtnD4G]

Strong running old cat. Despite what everyone says these old dozers love to lug. lower rpm is where torque comes from, top end is for hp, and you need torque to push.

[@wilmamcdermott3065]

Bull lugging causes it to lift the liners destroy enging liner protruson

[@wilmamcdermott3065]

Not to mention u might as well run with out turbo because it dosent spool up

[@wilmamcdermott3065]

Want a 90 hp buy a 90 hp thats All ur getting idleing it around

[@cosmiccolonel]

Rubbish

[@TheLukeduke90]

what year is the cat and is it turbo?

[@andrewwhisenhunt8274]

it is a 1961 and yes it is turbo

[@wilmamcdermott3065]

@@andrewwhisenhunt8274 nice 147 horse power mine is 1956 not turboed

[@wilmamcdermott3065]

Are u having liner lifting problems

[@edmcelhone4501]

too heavey oil in clutch if its oil will be ok when warm up

[@charlietanner6211]

need track guides then loosen track,s up a little good old tractor

[@wilmamcdermott3065]

Lugging all the time is not healthy for motor

[@charlienorton2337]

These old cats don’t rev much higher than this, after all low rpm is where torque comes from and these were built to lug

[@wilmamcdermott3065]

Not with a turbo on it need full rpms to make full power i know because i own one lugging lifts liners ruins ,block counter bores

[@wilmamcdermott3065]

Why do u think it smokes so bad messed up liners rings i got this from a finning man

[@charlienorton2337]

@@wilmamcdermott3065 What is a finning man?

[@wilmamcdermott3065]

@@charlienorton2337 catterpillar mechanic

[@fabiocaponecchi5396]

Io vorrei sapere chi ti ha messo in mano il trattore... Non indovini una manovra e non sai adoperare la ruspa!!!!! E dai il gas al motore!!!!!

[@bruceschweigert6457]

Boring