Trouble cross referencing glow plug relay

Hello All,

Our M1028 truck was recently inspected for the year at the fire company and the mechanic said the glow plug relay was bad. He said they are about 30.00 but told us we could install it ourselves to save on costs. He did not give any type of part number. I tried cross referencing the numbers but I am coming up short and can not find a replacement at Autozone, Advanced Auto Parts or Napa. Does anyone have the correct cross reference part? I kept looking it up last night but everything says does not fit your vehicle. I have highlighted the part I need from the technical manual.

Thanks in advance.

Alternate part numbers and suppliers number


Tech info

Maybe this helps.

From post # 1 of this thread
[h=1]Glow Plug Relay Repair[/h]I went to NAPA and purchased a ST85 relay. Installed it and the truck starts fine.

[h=1]CUCV Helpful Threads[/h]

Thank-you! Where did you find this information?

Guyfang said:

14076885	7X677
1759100	45152
1759100	[75Q65
5950011928653	] A00AM
974-1215-010-09	[ 88136
98226	[ 88136
[I 98226	[ 72055

Alternate part numbers and suppliers number

45152

OSHKOSH CORPORATION

72055

CAMDEC CORP

75Q65

OSHKOSH DEFENSE, LLC

7X677

GENERAL MOTORS LLC

88136

TROMBETTA CORPORATION

A00AM

E.C.A ETABLISSEMENT CENTRAL

Tech info

	OVERALL LENGTH	3.000 INCHES NOMINAL
	CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH	2.125 INCHES MINIMUM SINGLE MOUNTING FACILITY AND 2.250 INCHES MAXIMUM SINGLE MOUNTING FACILITY
	OVERALL HEIGHT	2.430 INCHES NOMINAL
	OVERALL WIDTH	1.830 INCHES NOMINAL
	MOUNTING SLOT WIDTH	0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY
	ENVIRONMENTAL PROTECTION	DUSTPROOF
	FRAGILITY FACTOR	MODERATELY RUGGED
	WINDING QUANTITY	1
	PURPOSE FOR WHICH DESIGNED	USED WITH
	COIL QUANTITY	1
	WINDING DC RESISTANCE RATING	6.0 OHMS NOMINAL SINGLE WINDING
	DUTY TYPE	INTERMITTENT
	ARC QUENCHING METHOD	AIR
	MOUNTING FACILITY TYPE AND QUANTITY	2 SLOTTED HOLE SINGLE MOUNTING FACILITY
	STORAGE TYPE	GENERAL PURPOSE WAREHOUSE
	III CUBIC MEASURE	13.341 CUBIC INCHES
	MOUNTING FACILITY PATTERN	IN-LINE SINGLE MOUNTING FACILITY
	NONPILE-UP MAIN CONTACT ARRANGEMENT	1 POLE, SINGLE THROW, NORMALLY OPEN, DOUBLE MAKE, MOMENTARY ACTION
	OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP	12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
	MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE	80.0 AMPERES DC RESISTIVE LOAD
	MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS	24.0 DC
	TERMINAL TYPE AND QUANTITY	4 THREADED STUD ALL FUNCTIONS

Maybe this helps.

Click to expand...

Just got lucky. Lots of info in the net, sometimes you can find it.

Also available here:
http://www.murcal.com/Catalog/Metal-DC-Contactor-Family/974-1215-011-09

I feel we'd be remiss if we did not mention in this thread that the correct relay has an isolated ground.

Not all relays are this way and they do look alike.

Test whatever you get before installing it. Use an ohm meter or continuity tester and be sure there is no continuity(connection) between the outside case(and mounting tabs) to either of the small lugs.

If you install the wrong relay, you could end up energizing your glow-plugs continuously and burn them out.

I saw this thread and thought it was the wrong type since ours is not a round relay.

porkysplace said:

From post # 1 of this thread
Glow Plug Relay Repair

I went to NAPA and purchased a ST85 relay. Installed it and the truck starts fine.

CUCV Helpful Threads

Click to expand...

Thanks, Could this be why when I saw a guy putting one of these on a 1009 on youtube use a manual push button with a rounded relay?

doghead said:

I feel we'd be remiss if we did not mention in this thread that the correct relay has an isolated ground.

Not all relays are this way and they do look alike.

Test whatever you get before installing it. Use an ohm meter or continuity tester and be sure there is no continuity(connection) between the outside case(and mounting tabs) to either of the small lugs.

If you install the wrong relay, you could end up energizing your glow-plugs continuously and burn them out.

Click to expand...

antennaclimber said:

Also available here:
http://www.murcal.com/Catalog/Metal-DC-Contactor-Family/974-1215-011-09

Click to expand...

This is the one you want to get. It works great and you can get the lug boots also from the same company. Good Luck.

The one that we saw on the truck tonight now that I had time to get the info is as follows ( I am assuming its the same as above by antennaclimber)

98226 12v/continuous
Torque Max
Camdec Corp. 04/01/1998
AU2199

Just an update, it was not the glow plug relay. We got our local AutoZone to donate AC Delco glow plugs for us and we changed them out, the truck starts fine. Thank-you to everyone for the help with this!