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AC Hydraulic DK13HLQ Drop Speed Adjustment

Pelican Technical Article:

AC Hydraulic DK13HLQ Drop Speed Adjustment

Jared Fenton


30 minutes30 mins






8mm deep socket

Applicable Models:

BMW E30 3-Series (1984-93)
BMW E36 3-Series (1992-99)
Porsche 911 (1965-89)
Porsche 912 (1965-69)
Porsche 914 (1970-76)
Porsche 924 (1977-82)
Porsche 924 Turbo (1980-82)
Porsche 924S (1987-88)
Porsche 928 (1978-91)
Porsche 928 GT (1990-91)
Porsche 928 GTS (1993-95)
Porsche 928 S4 (1987-89)
Porsche 928S (1983-86)
Porsche 930 Turbo (1976-89)
Porsche 944 (1983-89)
Porsche 944 S2 (1989-91)
Porsche 944 Turbo (1986-89)
Porsche 944S (1987-88)
Porsche 964 Carrera 2 (1990-94)
Porsche 964 Carrera 4 (1989-94)
Porsche 964 RS America (1993-94)
Porsche 964 Turbo (1991-94)
Porsche 968 (1992-95)
Porsche 986 Boxster (1997-04)
Porsche 986 Boxster S (2000-04)
Porsche 987 Boxster (2005-12)
Porsche 987 Boxster S (2005-12)
Porsche 987 Cayman (2007-12)
Porsche 987 Cayman S (2006-12)
Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Parts Required:

AC Hydraulic DK13HLQ floor jack

Performance Gain:

Optimize the drop speed for your AC Hydraulic DK13HLQ floor jack

Complementary Modification:

Get some good jack stands to go along with your super hydraulic floor jack

The AC Hydraulic DK13HLQ is quite simply, the best floor jack we have ever used. It features a low profile for fitting under lowered cars, a range of operation from 3.5" all the way to 29" and also a convenient foot pump that raises the jack quickly. What most people don't realize is that you can also adjust the speed at which the jack lowers when you turn the release handle. The drop speed on the lift is easily adjusted. Put the jack handle all the way down and look inside the mechanism where it meets the jack. You'll see a small 8mm adjusting nut inside (See Figure 1). Put a 8mm deep socket on the nut and turn it counter clockwise to decrease the drop rate. You'll have to play around with it a bit to get it exactly where you want it, but a half-turn is a good starting point (See Figure 2).

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Figure 1

Rotate the jack handle to the full downward position to access the 8mm adjusting nut on the inside (green arrow).

Figure 2

Use a 8mm deep socket to adjust the drop speed. Counter clockwise decreases the speed, while clockwise increases the speed.

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Page last updated: Sun 3/18/2018 02:19:12 AM