Register free!

The Green Industry's Resource Center



Reply
 
Thread Tools   Display Modes
  #1  
Old 07-12-2014, 02:28 PM
stonebridge's Avatar
stonebridge stonebridge is offline
LawnSite Senior Member
 
Join Date: Oct 2009
Location: NEW PALESTINE IN
Posts: 845
john deere757 pto clutch problem

I have a john Deere 757 28hp kaw I'm not sure what's going on with it
This is what happens I will be cutting and clutch disengages sometimes it will engage right away sometimes I have to wait a minute it will do it on one yard 2 or 3 times and maybe another lawn once sometimes it does nothing all day tired looking like a dumb ares in the middle of someones lawn
Is this a clutch problem. Pro problem is there a relay or fuse I'm missing all connections are good
Any help would be appreciated
__________________
!! I WANT TO CUT YOUR GRASS !!
SUND LAWN CARE
Ford F150
6' 1/2 x 14' open trailer
60''/28hp John Deere 757 zero turn
48''/17hp John Deere 7H17 walk behind
22''/6.5hp Toro Personnal Pace push
19"/4hp Bluebird aerator
2 Echo trimmers, 3 blowers, 1 hedge trimmer
1 Husqvarna trimmer/edger/hedger/pole saw
14'' Stihl TS400 concrete saw
and a bunch of other crap a solo operator needs
Reply With Quote
  #2  
Old 07-12-2014, 02:41 PM
Restrorob's Avatar
Restrorob Restrorob is offline
LawnSite Fanatic
 
Join Date: Apr 2005
Location: Show'n my truck off !
Posts: 10,779
Have the battery load tested then check for proper charging system output at the battery with wide open throttle no load......
__________________
Quote:
Originally Posted by piston slapper View Post
You never learn anything until you admit you don't know it all...
Quote:
Originally Posted by MannsLawnService View Post
some times the man in my mirror isn't so smart...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Reply With Quote
  #3  
Old 07-12-2014, 07:50 PM
stonebridge's Avatar
stonebridge stonebridge is offline
LawnSite Senior Member
 
Join Date: Oct 2009
Location: NEW PALESTINE IN
Posts: 845
Just cut 3 lawns with know problems I will look up and see how to test for the load test
What will that show me
__________________
!! I WANT TO CUT YOUR GRASS !!
SUND LAWN CARE
Ford F150
6' 1/2 x 14' open trailer
60''/28hp John Deere 757 zero turn
48''/17hp John Deere 7H17 walk behind
22''/6.5hp Toro Personnal Pace push
19"/4hp Bluebird aerator
2 Echo trimmers, 3 blowers, 1 hedge trimmer
1 Husqvarna trimmer/edger/hedger/pole saw
14'' Stihl TS400 concrete saw
and a bunch of other crap a solo operator needs
Reply With Quote
  #4  
Old 07-12-2014, 08:55 PM
Restrorob's Avatar
Restrorob Restrorob is offline
LawnSite Fanatic
 
Join Date: Apr 2005
Location: Show'n my truck off !
Posts: 10,779
You want to take the battery out of the machine then take it to a chain auto parts store or auto repair shop, They have the equipment to test the battery to make sure it's good. A weak/faulty battery can cause the clutch to drain more power than the charging system can produce, Than can cause the clutch to randomly kick off.

If the battery test good check the charging system as mentioned above, It should be putting 13.2 to 14.5 volts into the battery wide open no load. The higher the number without exceeding 14.5 the better.

If the battery is good and charging system is working properly, If you have the adjustable style PTO clutch check the air gap and adjust as needed.....
__________________
Quote:
Originally Posted by piston slapper View Post
You never learn anything until you admit you don't know it all...
Quote:
Originally Posted by MannsLawnService View Post
some times the man in my mirror isn't so smart...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!

Last edited by Restrorob; 07-12-2014 at 09:00 PM.
Reply With Quote
  #5  
Old 07-13-2014, 12:30 AM
herler herler is online now
LawnSite Gold Member
 
Join Date: Apr 2012
Posts: 3,900
No, it's just a John Deere, that's the problem.

I like Restro's analogy.

I might if it were my mower, clean all the connections up real good, could be just dust got in between the connections and it's causing resistance the current can't get through, I would clean all those like down at the clutch and the battery terminals and at the PTO switch, especially since you'll be removing the battery anyway.

But then again it is a John Deere.
Reply With Quote
  #6  
Old 07-13-2014, 11:39 AM
stonebridge's Avatar
stonebridge stonebridge is offline
LawnSite Senior Member
 
Join Date: Oct 2009
Location: NEW PALESTINE IN
Posts: 845
Yeah not thrilled with john Deere parts pricing but it sure cuts better than my scag vride did and it has a brand new motor on it so im gonna stick it out. With this one
__________________
!! I WANT TO CUT YOUR GRASS !!
SUND LAWN CARE
Ford F150
6' 1/2 x 14' open trailer
60''/28hp John Deere 757 zero turn
48''/17hp John Deere 7H17 walk behind
22''/6.5hp Toro Personnal Pace push
19"/4hp Bluebird aerator
2 Echo trimmers, 3 blowers, 1 hedge trimmer
1 Husqvarna trimmer/edger/hedger/pole saw
14'' Stihl TS400 concrete saw
and a bunch of other crap a solo operator needs
Reply With Quote
  #7  
Old 07-13-2014, 05:51 PM
fatboyf150 fatboyf150 is offline
LawnSite Member
 
Join Date: Apr 2014
Location: Myrtle Beach, SC
Posts: 15
PTO Clutch

PTO Clutch Coil Resistance 1.7-1.9 ohms

PTO Clutch Coil Current (Minimum) at 12 VDC 7.0 A

PTO Clutch Circuit Diagnosis

Test Conditions:

Machine parked on a level surface.

Key switch in OFF position.

Meter negative (-) lead on battery negative (-) terminal or chassis ground.

Check connections for corrosion and looseness when checking/testing.
System: PTO Clutch Circuit

MIF

(1) Battery Positive (+) Post. Measure voltage. Is voltage in the range 11.8-13.2 V?
Yes - Go To Step (2)
No - Check battery condition. (See "Battery Test" on page 164.)

MIF

(2) Starter solenoid battery terminal. Is battery voltage present?
Yes - Go To Step (3)
No - Check battery cables and clamps. Clean and tighten connections.

M83143ae

(3) Key Switch (S1) - Terminal B. Is battery voltage present?
Yes - Go To Step (4)
No - Test wires 220 red and 205 fuse link (F2) and connections.

M84544

(4) PTO Relay (K4) - Terminal 30. Is battery voltage present1?
Yes - Go To Step (5)
No - Test wires 240 red and 200 fuse link (F1) and connections.

M84544

(5) PTO Relay - Terminal 85a. Measure resistance from terminal 85 (wire 140 blk) to ground. Is resistance Less than 0.1 ohms?
Yes - Go To Step (6)
No - Test wires 140 and 100 black and connections.

M84539

(6) PTO Clutch (Y2). Measure resistance from ground terminal (wire 108 black) to ground. Is resistance Less than 0.1 ohms?
Yes - Go To Step (7)
No - Test wire 108 black and connections.

M83143ae

(7) Key Switch (S1) - Terminal A. Key switch to ON position.
Is battery voltage present?
Yes - Go To Step (8)
No - Test key switch. (See "Key Switch Test" on page 170.)

MIF

(8) Main Fuse (F3) - Input Terminal2. Is battery voltage present?
Yes - Go To Step (9)
No - Test wire 400 yellow and connections.

MIF

(9) Main Fuse (F3) - Output Terminalb. Is battery voltage present?
Yes - Go To Step (10)
No - Test main fuse (F3) and connections.

MIF

(10) PTO Switch (S6) - Wire 460 Yellow. Is battery voltage present?
Yes - Go To Step (11)
No - Test wires 460 and 401 yellow and connections.

MIF

(11) PTO Switch (S6) - Wire 500 Blue. Is battery voltage present?
Yes - Go To Step (12)
No - Test PTO switch. (See "PTO Switch Test" on page 172.)

M84539

(12) PTO Clutch (Y2). Is battery voltage present?
No - Test wire 510 blue and connections.
1

When checking voltages and/or resistance at relay terminals, it is necessary to disconnect the relay connector and check voltages at the open terminal. Reconnect the wiring connector after performing the check.

2

When checking voltages and/or resistance at the main fuse, it is necessary to remove fuse cover and check voltages at the exposed terminal. Install the cover after performing the check.
Reply With Quote
  #8  
Old 07-13-2014, 05:53 PM
fatboyf150 fatboyf150 is offline
LawnSite Member
 
Join Date: Apr 2014
Location: Myrtle Beach, SC
Posts: 15
PTO Clutch Circuit Operation
Function

To provide power to energize or de-energize the PTO clutch and/or MCS (Material Collection System) clutch when desired by the operator.
Theory of Operation

The power circuit provides current to the key switch (S1) and protects the PTO circuit with fuse link (F2). Current flows from the battery (G1) positive (+) terminal to the key switch (wires 205 fuse link [F2] and 220 red).

With the key switch in the RUN position, current flows to 20-amp main fuse (F3) (wire 400 yellow) and PTO switch (S6) (wires 401 and 460 yellow). Current flows directly to PTO relay (K4) terminal 30 from the battery (wires 200 fuse link and 240 red).

With the PTO switch in the ON position, current flows to the coil of PTO relay (K4) (wire 500 blue). A path to ground (wire 140 black) completes the relay coil circuit, engaging the relay.

With the PTO relay engaged, current flows across the relay contacts to PTO clutch (Y2) (wire 510 blue). A path to ground (wire 108 black) completes the circuit engaging the PTO clutch.
Attached Images
 
Reply With Quote
  #9  
Old 07-13-2014, 05:56 PM
fatboyf150 fatboyf150 is offline
LawnSite Member
 
Join Date: Apr 2014
Location: Myrtle Beach, SC
Posts: 15
PTO Switch Test
Reason

To verify that the continuity between terminals is correct when the switch is in the ON and OFF positions.

Special or Required Tools

Tool Name


Tool No.


Tool Use

Ohmmeter or Continuity Tester


NA


Used to test continuity between terminals.
Procedure

1. Park machine on level surface.

2. Turn key switch to OFF position.

3. Engage park brake.

4. Remove right-side control console cover.

5. Disconnect PTO switch connector.

6. Move PTO switch to OFF position.

M47616

7. Connect ohmmeter leads to terminals (A and B). There should be continuity.

8. Connect ohmmeter leads to terminals (C and E). There should be continuity.

9. Move PTO switch to ON position.

10. Connect ohmmeter leads to terminals (D and E). There should be continuity.
Results

If continuity is not correct, replace switch.
Attached Images
 
Reply With Quote
  #10  
Old 07-14-2014, 07:52 PM
stonebridge's Avatar
stonebridge stonebridge is offline
LawnSite Senior Member
 
Join Date: Oct 2009
Location: NEW PALESTINE IN
Posts: 845
Last month I put a new 28hp law to replace the 25hp law there were 2 wires that I didn't get used the long green and long yellow on the starter side that went to the volt regulator the new motor only had one prong for the red connection could that be part of the problem
__________________
!! I WANT TO CUT YOUR GRASS !!
SUND LAWN CARE
Ford F150
6' 1/2 x 14' open trailer
60''/28hp John Deere 757 zero turn
48''/17hp John Deere 7H17 walk behind
22''/6.5hp Toro Personnal Pace push
19"/4hp Bluebird aerator
2 Echo trimmers, 3 blowers, 1 hedge trimmer
1 Husqvarna trimmer/edger/hedger/pole saw
14'' Stihl TS400 concrete saw
and a bunch of other crap a solo operator needs
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 11:12 PM.

Page generated in 0.07643 seconds with 10 queries