Is there a manual on how to adjust the voltage regulator?
Thanks!
Voltage Regulator adjustments
- Tim52
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Voltage Regulator adjustments
CDR USN (RET)
Patrol Squadron 46 "Grey Knights"
Naval Flight Officer
Gulf War Veteran
45 GPW 271750
frame/engine match no data plates (DoD est. July 5 '45)
Patrol Squadron 46 "Grey Knights"
Naval Flight Officer
Gulf War Veteran
45 GPW 271750
frame/engine match no data plates (DoD est. July 5 '45)
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Re: Voltage Regulator adjustments
The TM for the jeep has a good detail on tuning it. Don't have my book with me but it's in there.
Lew Ladwig
CMHG, 9th ID, Commander
BSA Crew 42 Advisor, 9th ID reenactors
CFFC, IFFC president
2-'47 cj2a's
1-'45 gpw in full resto mode
CMHG, 9th ID, Commander
BSA Crew 42 Advisor, 9th ID reenactors
CFFC, IFFC president
2-'47 cj2a's
1-'45 gpw in full resto mode
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Re: Voltage Regulator adjustments
Knowing what normally needs to be done I find the TM confusing with too much overhaul related type information for most DIY type persons.
Unless one has had the CVR [current voltage regulator] apart there should be no need for any especially major adjustments like armature air gaps etc.
These CVR's are extremely rugged & rarely require attention, unless they have been fooled with or someone has shorted something trying to remove the housing cover without disconnecting the battery.
Everything inside the CVR can be checked with a voltmeter across the 2 battery terminals [terminals that must be clean].
No need to even pop the housing cover off.
You have 3 spools:
1. Circuit breaker....its job is to connect the battery to the charging circuit @ about 800+ RPM & disconnect the battery from the charging circuit below 800 RPM or @ idle speed.
To check @ idle speed the voltmeter should read battery voltage 6.2V [12.4V] approximately.
Rev the engine & @ about 800+ the circuit breaker points should close & voltage should jump up to 7.4V [14.4V] approximately....
Let back to idle & voltage should drop back to battery voltage when the cut out points open.
If the cut out doesn't close quickly enough as engine speed rises or opens @ too high an engine speed when slowing down the circuit breaker point spring tension needs to be reduced until closing & opening are @ about the right engine speed.
2. If the voltage is right in 1. nothing needs to be done....if low or high spring tension on voltage spool needs to be adjusted with the knurled adjuster & re-checking until the right voltage reading is obtained.
3. With the headlights on @ idle speed the dash ammeter should show discharge [@ idle the light feed is direct from the battery as the CVR cut out is open & the generator is not charging the battery] but when the engine is revved the ammeter should go back to positive [the amount depends on battery state of charge] & the lights should get brighter.
Unless one has had the CVR [current voltage regulator] apart there should be no need for any especially major adjustments like armature air gaps etc.
These CVR's are extremely rugged & rarely require attention, unless they have been fooled with or someone has shorted something trying to remove the housing cover without disconnecting the battery.
Everything inside the CVR can be checked with a voltmeter across the 2 battery terminals [terminals that must be clean].
No need to even pop the housing cover off.
You have 3 spools:
1. Circuit breaker....its job is to connect the battery to the charging circuit @ about 800+ RPM & disconnect the battery from the charging circuit below 800 RPM or @ idle speed.
To check @ idle speed the voltmeter should read battery voltage 6.2V [12.4V] approximately.
Rev the engine & @ about 800+ the circuit breaker points should close & voltage should jump up to 7.4V [14.4V] approximately....
Let back to idle & voltage should drop back to battery voltage when the cut out points open.
If the cut out doesn't close quickly enough as engine speed rises or opens @ too high an engine speed when slowing down the circuit breaker point spring tension needs to be reduced until closing & opening are @ about the right engine speed.
2. If the voltage is right in 1. nothing needs to be done....if low or high spring tension on voltage spool needs to be adjusted with the knurled adjuster & re-checking until the right voltage reading is obtained.
3. With the headlights on @ idle speed the dash ammeter should show discharge [@ idle the light feed is direct from the battery as the CVR cut out is open & the generator is not charging the battery] but when the engine is revved the ammeter should go back to positive [the amount depends on battery state of charge] & the lights should get brighter.
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.
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Re: Voltage Regulator adjustments
Tim, the manual you are asking about is TM 9-1825B; However, John's succinct post is all you will likely need for adjusting,thanks John...Tim,I will add, if yours is a VRY 4203 series,to polarize the generator, you disconnect the field lead at the regulator and momentarily touch it to the 'Bat' terminal.
Ralph
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Re: Voltage Regulator adjustments
One TM is TM 10 1513 Section 0600 Page 66 & it is a free download from Jeepdraw. Just take on board what I mentioned earlier, before doing or ADJUSTING anything in the TM write-up.Tim wrote:Is there a manual on how to adjust the voltage regulator? Thanks!
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.
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