Power Steering Pump Delivery Pressure, Checking - Engine Code(S): CALA

Special tools and workshop equipment required 

• Hose Clamps Up to 25 mm Dia. 3094
• Torque Wrench 5-50 Nm V.A.G 1331
• Power Steering Test Unit V.A.G 1402
• Adapter Hose V.A.G 1402/6
• Drip Tray for VAS 6100 VAS 6208
• Adapter V.A.G 1402/3 is needed for vehicles that have a pressure line with a separating point, see item  14
• Adapter Set V.A.G 1402/17 is needed for vehicles that have a pressure line without a separating point, see item  14.

Prerequisites 

• Ribbed belt/ribbed belt tension OK
• Sealing of system
• Hoses/lines are not kinked or constricted

Checking 

-- Clamp off the suction hose -1- and return hose -2- using the 3094.

Applies to vehicles that have a pressure line with a separating point, see item  14.

-- Remove noise insulation. Refer to Description and Operation .

-- Engage the tester -3- on the control arm -1- using a hook -2-.

-- Position the VAS 6208 below to collect the hydraulic oil.

-- Loosen the union nut -5-. Counter hold at the hex head.

-- Install V.A.G 1402 as shown in illustration.

1. Pressure line with separating point
2. Hose from adapter set V.A.G 1402/6
3. Pressure gauge V.A.G 1402
4. Hose from adapter set V.A.G 1402/6
5. Adapter V.A.G 1402/3

-- Attach the V.A.G 1402 hoses to the open connections on the pressure hose as illustrated.

Applies to vehicles without a separating point, see item  14.

-- Remove the bolts -1- and remove the pressure line from the power steering pump.

-- If the pressure line is also attached to the A/C compressor, then remove the bolt -C- for the bracket -D-.

-- Mount the V.A.G 1402 as illustrated.

1. Power Steering Pump
2. Adapter V.A.G 1402/17-1 with elbow V.A.G 1402/17-3. See  1
3. Bolt for mounting the pressure line
4. Hose from adapter set V.A.G 1402/6
5. Power steering tester V.A.G 1402
6. Pressure Line
7. Adapter V.A.G 1402/17-2 with elbow V.A.G 1402/17-3

1. Replace the adapter V.A.G 1402/17-1 seal if it is damaged or leaking.

Continuation for All 

-- Make sure that lever on pressure gauge stands in position -2-.

-- Remove the 3094.

-- Start engine without giving gas.

-- Turn the steering wheel from lock to lock about 10 times.

-- Turn off the engine and, if needed, fill hydraulic fluid in reservoir.

-- Now check delivery pressure.

-- Start engine.

-- With the engine at idle, close the shutoff valve to position -1- and read the pressure (the lever must face away from the pressure hose). Do not perform measurement longer than 10 seconds.

Delivery pressure specified value, vehicles without dynamic steering: 115 to 0.132 bar

Delivery pressure target value - vehicles with dynamic steering: 114 to 131 bar

If the pressure is not at the specified value, replace the power steering pump. Refer to POWER STEERING PUMP, VEHICLES WITH DYNAMIC STEERING  or POWER STEERING PUMP, VEHICLES WITHOUT DYNAMIC STEERING .

-- Turn off engine.

-- Remove V.A.G 1402.

Tightening specifications, refer to VEHICLES WITHOUT DYNAMIC STEERING OVERVIEW 

-- Note the line installation location when bolting the line connection. The markings -1 and 2- must be opposite each other.

-- Tighten the union nut -1-. Counter hold at the hex head.

-- Tighten the nut -3- and the rubber bushing -4- if necessary.

-- Bleed the steering. Refer to STEERING, BLEEDING AFTER REPLACING .

-- Check power steering fluid level. Refer to POWER STEERING FLUID LEVEL, CHECKING .

-- Check all open line connections for leaks. Refer to STEERING, CHECKING FOR LEAKS .