Hi,
First, low hydraulic fluid can cause it not to fully operate. To check fluid, the pump needs removed. Here are the directions.
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Perform the following in order to get the proper level of fluid in the pump reservoir:
1. Make sure that the system is sealed.
2. Remove the hydraulic pump/motor from its mounting location but don't remove any lines See: Convertible Top Motor > Removal and Replacement > Hydraulic Motor And Pump Assembly - Removal.
3. Remove the pump bracket and jute/cover that surrounds the pump.
4. The fill hole to the reservoir is on the left side of the pump as it is mounted. You must turn the pump/motor on its right end to allow it to be filled. Don't overfill or damage to pump/motor may occur. The proper fill level of the fluid is between the top and bottom of the plus sign on the reservoir, when the top is latched at the header and the decklid is closed.
NOTE: As the lost fluid is replaced in each component, the reservoir will drain. Check the reservoir often while running the top up and down.
5. Fill reservoir up enough to allow it to run and fill up whatever was replaced or leaked out.
6. Operate the power top up and down and check/replace fluid until proper level is reached with the pump in the horizontal position.
7. Repeat 6 as necessary to reach proper fluid level.
8. After fluid is at proper level, install bracket on pump/motor.
9. Install the pump/motor See: Convertible Top Motor > Removal and Replacement > Hydraulic Motor And Pump Assembly - Installation.
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Here are the removal directions for the pump. The attached pics correlate with the directions.
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REMOVAL
pic 1
NOTE: The hydraulic system uses ARAL VITAMOL ZH-M fluid. When replacing components or topping off system due to leak, make sure to use only approved fluid. When adding fluid See: Convertible Top > Symptom Related Diagnostic Procedures > Water Leak Test .
1. Disconnect the battery negative remote cable.
2. Open decklid.
3. Remove the spare tire cover/floor panel.
4. Remove the rear trunk trim.
5. Remove the spare tire and jack.
6. Remove the two bolts (2) from the pump assembly.
7. Separate the pump from the bracket:
a. Unwrap the insulation.
b. Disconnect the electrical connector and un-clip the push pin.
pic 2
pic 3
8. Release the pump pressure valve by turning it counter clockwise (1) two rotations.
9. Remove the bolts to the line retaining plate.
10. Move the lines and retaining plate out of the way.
11. Remove pump assembly from the vehicle.
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Here are the installation directions.
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HYDRAULIC MOTOR AND PUMP ASSEMBLY - INSTALLATION
INSTALLATION
pic 4
pic 5
1. Position the pump assembly into trunk.
2. Position the lines and retaining plate on the pump assembly and install the retaining plate bolts. Match the numbers on the hydraulic lines to the mounting plate.
3. Install the pump onto the bracket:
a. Connect the electrical connector and clip the push pin onto the bracket.
b. Wrap the insulation.
pic 6
4. Install the two bolts (2) and one nut to the pump assembly.
NOTE: The hydraulic system uses ARAL VITAMOL ZH-M fluid. When replacing components or topping off system due to leak, make sure to use only approved fluid. When adding fluid See: Convertible Top > Symptom Related Diagnostic Procedures > Water Leak Test .
5. Install the spare tire and jack.
6. Install the rear trunk trim.
7. Install the spare tire cover/floor panel.
8. Close decklid.
9. Connect the battery negative remote cable.
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If fluid is needed, make sure to use what is indicated above to refill.
Let me know if this helps.
Joe
Images (Click to enlarge)
Nov 19, 2019 at 8:07 PM
