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Wb150 backhoe. When in first gear when cold it will seem like…

Wb150 backhoe. When in first...
Wb150 backhoe. When in first gear when cold it will seem like it is slipping and then it sometimes won't move once it warmed up it seems to work okay. Also when it was warm it would move as soon as you put it in gear and not press the throttle. Also I pushed the loader into a pile but could not get the machine to spin a tire?
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Answered in 6 minutes by:
5/19/2016
Mechanic: Dan, Technician replied 6 years ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,845
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Hi my name is ***** ***** be glad to try to help. Please post the complete model and serial number from the ID tag. Also check the transmission filter for signs of metal /debris and discolored /burnt oil indicating internal problems. Let me know

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Customer reply replied 6 years ago
It will take me a day or so to check the fluid should it spin a tireShould it spin a tire into a load
Mechanic: Dan, Technician replied 6 years ago

In low gear it should yes.

Is this a dash 2 machine? Do you have the serial number as well?

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Customer reply replied 6 years ago
F 10191. I think it is it is a 2003 year
Customer reply replied 6 years ago
I think I now a 2n
Mechanic: Dan, Technician replied 6 years ago

I have a complete shop manual for WB140PS-2N/WB150PS-2N

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Customer reply replied 6 years ago
It is not a 140ps it is a 150-2 not a ps
Mechanic: Dan, Technician replied 6 years ago

Let me check the partsbook for the transmission differences between the two... If the same drivetrain you can still use the manual... ill look

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Customer reply replied 6 years ago
Thanks
Mechanic: Dan, Technician replied 6 years ago

2WD or 4WD model?

Just crossed the numbers and both use the same transmission and converter

TORQUE CONVERTER AND HYDRAULIC STALL
1. Start the motor at set at the low idle. Engage 4th gear and apply the
brake firmly.
2. While keeping the brake applied, 4th gear engaged, accelerate the
engine gradually and at the same time activate the control valve
lever to curl the front bucket, and turn the steering wheel and hold
it at the end of its stroke.
3. Once the maximum engine speed and maximum pressure of the
bucket circuit have been reached, note the speed reached by the
engine.
● TIER I Engine ........................................................ 2000 ±50 rpm
● TIER II Engine BH Controls ................................. 2050 ±50 rpm
● TIER II Engine EX Controls.................................. 2250 ±50 rpm
● If the engine rpm are higher than the permissible limit in both
tests, check the delivery pressure to the converter and the clutch
pressures.
● If the engine rpm is lower than the permissible limit, check the
condition of the air filter, the engine compression, the timing, the
injection pump, and the valve clearances

TORQUE CONVERTER STALL
1. Start the engine at set at the lowest idle. Engage 4th gear and apply
the brake firmly.
2. While keeping the brake applied, accelerate the engine gradually up
to high idle and measure the speed reached.
★ WB140PS-2N TIER I Engine.............................2100 ±50 rpm
★ WB140PS-2N TIER II Engine BH Controls......2200 ±50 rpm
★ WB140PS-2N TIER II Engine EX Controls ......2275 ±50 rpm
★ WB150PS-2N TIER I Engine.............................2275 ±50 rpm
★ WB150PS-2N TIER II Engine BH Controls......2200 ±50 rpm
★ WB150PS-2N TIER II Engine EX Controls ......2275 ±50 rpm

Run through these tests as well and let me know the results.

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Customer reply replied 6 years ago
Passed test
Mechanic: Dan, Technician replied 6 years ago

Is the oil burnt or discolored? Any fine metal/debris in the oil , suction screen, or filter? If it passes the stall tests, no metal is found or indication of a failure and the pressures are in specs. I would have to say there are no troubles if it passes all the tests...

1P2OWER TRAIN GROUP
The power train group can be used to perform pressure tests on the
internal hydraulic circuit. These are useful for identifying malfunctions.
Specifically, the tests involve:
1. Converter oil pressure.
2. Clutch engagement pressures for both directions of travel.
★ Test conditions:
● Engine............................................................................... Stopped
● Brake pedals ................................................................. Connected
● Machine: On solid and level ground with the equipment raised
and safety devices engaged.
PREPARING THE MACHINE
1. Prepare the tachometer C to measure the engine rpm.
★ When mounting an electronic transducer tachometer on a diesel
delivery line to the injection nozzles, make sure that it is
placed far away from the line clamp.
CONVERTER OIL PRESSURE
1. Remove the plug P28 and connect pressure gauge E6.
2. Start and engine and heat all the fluids up to working temperature.
Make sure that the power train oil reaches a temperature of 80
±5°C.
3. With the engine at low idle, check the pressure on the pressure
gauge E6.
★ Normal pressure ...............................................Min. 0.5 kg/cm²
4. Gradually increase the engine speed to high idle. Take a new reading
from the pressure gauge E6.
★ Normal pressure....................................................... 9.2 kg/cm²
5. Bring the engine back to low idle and compare the pressure with
the normal value.
★ Normal pressure ...............................................Min. 0.5 kg/cm²
★ If the maximum pressure value drops to below the permissible
lower limit, the power train pump needs an overhaul.
CLUTCH PRESSURE
1. Remove the access plate from the cab floor.
2. Remove plug P19 and connect pressure gauge E6

31.2 Start and heat the engine and all the fluids up to working temperature.
Make sure that the power train oil reaches a temperature of 80
±5°C.
4. With the engine at low idle, check the pressure on the gauge E6.
★ Normal pressure............................................Max. 0.32 kg/cm²
5. Select the REVERSE gear and gradually increase the engine speed
to high idle. Take a new reading from the pressure gauge E6.
★ Normal pressure............................................... 11 to 13 kg/cm²
6. Bring the engine back to low idle and place the transmission in
neutral. Compare the pressure with the normal value.
★ Normal pressure............................................Max. 0.36 kg/cm²
7. Remove the pressure adapter and replace the plug P20.
8. Repeat the same test for the FORWARD gear, reading the pressure
from the plug P19.
● If the pressures are different for the travel directions, there is a
loss of pressure on the clutch piston with lowest pressure

TRANSMISSION CLUTCHES
★ Test conditions:
● Engine..............................................................................Stopped.
● Brake pedals ................................................................. Connected
● Machine: on solid and level ground with the equipment raised
and safety devices engaged.
★ This test must be performed after having checked the pressures of
the power train group.
PREPARATION OF THE MACHINE
1. Prepare tachometer C to measure the engine rpm.
★ When mounting an electronic transducer tachometer on a diesel
delivery line to the injection nozzles, make sure that it is
placed far away from the line clamp.
TESTING
1. Start and heat the engine and all the fluids up to working temperature.
Make sure that the power train oil reaches a temperature of 80
±5°C.
2. With the engine at low idle, accelerate to high idle. Check that the
rpm remain within permissible limits.
3. Brake hard and bring the engine up to high idle.
4. Maintaining the braking action and the acceleration, engage the
FORWARD gear and check that the engine speed decreases until it
is once again within permissible limits.
5. Repeat this test in REVERSE gear.
★ If the rpm are higher than the permissible limits, the clutches are
worn, and must be replaced.

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Customer reply replied 6 years ago
One other question. Can I switch the hoses on the hoe I am used to John Deere controls and it is setup with excavator controls. I only want to make the boom operate with the left and the dipper to work with the right.
Mechanic: Dan, Technician replied 6 years ago

Yes, you can swap the controls by switching the lines. Boom up with arm in and boom down with arm out. Its best to swap the pilot lines from the controls when possible.

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Customer reply replied 6 years ago
I actually wanted to switch the boom with dipper controls?
Mechanic: Dan, Technician replied 6 years ago

Yes, The Dipper is also known as the Arm. We are on the same page just using different terminology.

Here is a standard chart to help.

Pattern Change

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Customer reply replied 6 years ago
Okay cool I thought they may have different relief pressures ect... They sell a 660 dollar kit to change the linkage instead of the hoses !
Mechanic: Dan, Technician replied 6 years ago

Click on this link. They are the same valve banks bolted together. If you do not want to reset any of the pressures you can just swap the complete relief cartidges between Boom and Arm/Dipper circuits. Sometimes there might be one or two hoses you may need to add a union and add an extension hose if you can not get enough length on it. But it is less money than the linkage kit. Please take a moment and rate my service. It is a Pleasure to help.

http://komatsupartsbook.com/#?k=!0!8!5492!156!176

Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,845
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified
Dan and 87 other Construction and Road Equipment Specialists are ready to help you
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Customer reply replied 6 years ago
Sorry to bother you but the trans looked real good. The engine we popped the lid while running and it was gurgling. We put a pressure test on it during start up and it climbed to 18 psi in about three minutes we then shut it down. Head gasket!? They did not have a block tester to test for ex aughtst gases.Oil looked good in engine so no coolant in there
Customer reply replied 6 years ago
Just did a block test and fluid came back good but there is still pressure it seems to go into the radiator. It is gurgling.
Customer reply replied 6 years ago
Does the yanmar engine have sleeves
Customer reply replied 6 years ago
Are you still around.
Mechanic: Dan, Technician replied 6 years ago

Is that valve shown in the picture diagram in the link I posted?

You should not have to swap any part of the valves for this in this machine. the valve sections I see are the same part numbers. This would only apply if they were different.

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Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,845
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