MB/GPW WATER PUMP PULLEY
-
- Jeep Heaven
- Posts: 49841
- Joined: Sun Mar 02, 2008 12:37 pm
- Location: Proving Ground
MB/GPW WATER PUMP PULLEY
A word of caution when installing that" period correct" pulley on your MB/GPW Water Pump. Some of these tempting pulleys have been installed and removed many times of their 70+ year history and have lost their "press fit". The result is the fan ruining the radiator. Best to be safe than sorry, choose a tight fitting pulley over the loose fitting one regardless. Don't rely on Loc Tite to cure the problem.
It happens more often than you think.
It happens more often than you think.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
- Chuck Lutz
- Gee Addict
- Posts: 26829
- Joined: Wed Jun 28, 2006 7:00 am
- Location: Jeep Heaven
Re: MB/GPW WATER PUMP PULLEY
Welcome back, Joel!
Chuck Lutz
GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947
GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947
-
- Jeep Heaven
- Posts: 49841
- Joined: Sun Mar 02, 2008 12:37 pm
- Location: Proving Ground
Re: MB/GPW WATER PUMP PULLEY
Thanks Chuck, I missed you. Chuck is a gentleman G503'er who absorbs G-503 knowledge like a sponge and enjoys sharing what he learns with no boundaries.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
- Gary C V
- G-Major
- Posts: 894
- Joined: Tue May 13, 2003 2:45 am
- Location: Sydney, Australia
Re: MB/GPW WATER PUMP PULLEY
I second that Chuck, welcome back Ben .
Cheers
Gary
Cheers
Gary
- Jeeps4Brains
- G-Lieutenant Colonel
- Posts: 1082
- Joined: Wed Jul 20, 2005 8:56 am
- Location: Upstate SC
Re: MB/GPW WATER PUMP PULLEY
And here is the evidence - Not from a MB/GPW but from a M38A1.
Day two of the Smokey Mountains Convoy climbing the mountains up to Newfound Gap I heard a new sound from the Jeep, a repeating growling sound. At the pass I opened the hood but could not see anything wrong. The growling continued down the other side of the mountains. I stopped at a traffic light in Cherokee. When I turned left the fan pulley came off and you can see the result:
Has anyone ever welded the pulley on to the shaft to prevent this?
Day two of the Smokey Mountains Convoy climbing the mountains up to Newfound Gap I heard a new sound from the Jeep, a repeating growling sound. At the pass I opened the hood but could not see anything wrong. The growling continued down the other side of the mountains. I stopped at a traffic light in Cherokee. When I turned left the fan pulley came off and you can see the result:
Has anyone ever welded the pulley on to the shaft to prevent this?
45' MB, ??' MBT, 47' CJ2A, 48' CJ2A,
51' M38 #1, 51' M38 #2, 51' M100,
52' M37, ??' M101A1 (1st Gulf War Vet),
53' M38A1, 53' M211, 65' M151A1, 67' M416,
MVPA #31724
51' M38 #1, 51' M38 #2, 51' M100,
52' M37, ??' M101A1 (1st Gulf War Vet),
53' M38A1, 53' M211, 65' M151A1, 67' M416,
MVPA #31724
-
- Jeep Heaven
- Posts: 49841
- Joined: Sun Mar 02, 2008 12:37 pm
- Location: Proving Ground
Re: MB/GPW WATER PUMP PULLEY
OUCH!
Usually the best cure is a NOS Pulley. A used pulley that has been on too many water pump rebuilds is sometimes noticeable. Don't use loc tite to cure a loose water pump pulley.
The Pulley area gets more of a workout than many realize, worn pulley ID is not worth the gamble.
Usually the best cure is a NOS Pulley. A used pulley that has been on too many water pump rebuilds is sometimes noticeable. Don't use loc tite to cure a loose water pump pulley.
The Pulley area gets more of a workout than many realize, worn pulley ID is not worth the gamble.
Last edited by Joe Gopan on Mon Sep 18, 2017 5:27 pm, edited 1 time in total.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
- Chuck Lutz
- Gee Addict
- Posts: 26829
- Joined: Wed Jun 28, 2006 7:00 am
- Location: Jeep Heaven
Re: MB/GPW WATER PUMP PULLEY
I would first ascertain if there is any movement by trying to turn or pull on the pulley but you have to remember the fan itself wants to pull air into the radiator which means it wants to move forward so that might be difficult to check out. I don' vote for welding the pulley in place, but I do think 3-4 peenings of the pulley hole where it is attached to the pump would suffice.
Yup...a friend of mine had his fan come off and crash into the radiator once also.
Yup...a friend of mine had his fan come off and crash into the radiator once also.
Chuck Lutz
GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947
GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947