E-Torque

[sport2013]

HI 2020 big horn mgu unit went out back bearing bad . pulled it apart got new bearing cleaned reassembled still not charging noticed on rear cover there is a resolver that got chewed up. anyone ever replace it, it's made in japan Minebea can not find a distributor for it I believe this is the problem not sending a proper signal back .

 

[Randy Grant]

Good old Google

Contact for assistance

Resolvers | Rotary Components | MinebeaMitsumi Product Site

MinebeaMitsumi product site. Find detailed product information about Resolvers and PDF catalogs for each model. Quickly get detailed information about the product you need.

product.minebeamitsumi.com

VR resolvers, angle sensors based on a variable reluctance method, have a promising future mainly for use in controlling motors in automobile-related applications. VR resolvers are expected to find a wide range of applications in the future, such as in electric powered steering, hybrid cars, electric cars, integrated starter generators, brake by wires, steering by wires, and valve controls. The signal from a VR resolver can be converted digitally using the same R/D converter as those intended for the brushless resolver.

Parts	Number of multiple	Stator outer diameter [mm]	Rotor inner diameter [mm]
10VRX	2X-4X	25	6
15VRX	2X-5X	37	12
21VRX	2X-8X	52	18
26VRX	2X-8X	66	30
40VRX	2X-6X	101	45
52VRX	2X-6X	132	52
63VRX	2X-8X	160	93

 

[RamDiver]

HI 2020 big horn mgu unit went out back bearing bad . pulled it apart got new bearing cleaned reassembled still not charging noticed on rear cover there is a resolver that got chewed up. anyone ever replace it, it's made in japan Minebea can not find a distributor for it I believe this is the problem not sending a proper signal back .

That resolver looks like a completely passive device.

Were you able to determine that one or more of the windings has failed, using an ohm meter?

.

 

[Randy Grant]

That resolver looks like a completely passive device.

Were you able to determine that one or more of the windings has failed, using an ohm meter?

.

Probably just relays info on RPM and the like.

 

[RamDiver]

Probably just relays info on RPM and the like.

Agreed but either a winding has failed or the connection to/from a winding has failed.

I can't see how mangled the assembly is, I would test it regardless of the appearance.

.

 

[Wild one]

Probably just relays info on RPM and the like.

Makes me wonder if you could fool it into supplying torque for a longer period of time.

 

[RamDiver]

Makes me wonder if you could fool it into supplying torque for a longer period of time.

Do you have a schematic for an MGU?

.

 

[sport2013]

good morning the 10 VRX x3 is correct size there are three lobes for feed back. when the rear bearing went it allowed the shaft to canter into the top of the steel that the windings are around and lobes are worn down . ill try to take it back off and get pics but bottom line is no feed back in my opinion and assumption on my part is it thinks there is no rotation / belt. it is my friends truck the unit's are still a month out. I though if I could get the part and try it it might help others in same situation I had seen the same thing randy posted above my issue is finding a distributor where to buy it from .

 

[Wild one]

Do you have a schematic for an MGU?

.

No i don't,but i'm wondering if it could be tricked somehow, into suppling torque for a longer time aka higher engine rpm. I haven't dug into the MGU at all,but i think it turns off at a fairly low rpm

 

[RamDiver]

No i don't,but i'm wondering if it could be tricked somehow, into suppling torque for a longer time aka higher engine rpm. I haven't dug into the MGU at all,but i think it turns off at a fairly low rpm

That makes good sense, especially if the part is expensive or difficult to find a replacement.

If we can find a schematic or service manual, there might be a way to fool it into submission.

.

 

[Randy Grant]

Check bone yards for complete totals for a doner MGU for parts

 

[sport2013]

in Michigan here a hemi last about a hour in a yard . my friend ordered a replacement. I contacted the mfg. of part they were interested until I told them I didn't need a 1000 of them

 

[Randy Grant]

Check out of state.
BTW, there are a bunch in Texas. Says a lot about drivers down there.

 

[sport2013]

so a thought as how to check the 48 volt battery to see if it is good 'bad 'or ugly is any special method on how to do it