Dear friends,
this is VR3F Caterpillar AVR unit. can anyone say what is this black coulour part fixed here. i searched everywhere couldn't success. this part is not working.
Dear friends i am new guy for this forum and right now im repairing 2 catepiller generators which are having VR3 - SE AVR Unit. both units having 2 fuses fixed outside and both fuses are blowing when the generator starts at once.
if anyone having experience about this problem pls let me know...