This article focuses on how to disassemble TAD1240 series Volvo engine
1 is important! Make sure the area around the unit pump is clean before removing it. Remove the unit
pump, see Unit Pump, Replacement page 229 and install Install the single pump protection device
(9998249 protection sleeve). use 9998599 Cleaning Kit Clean copper sleeves as needed.
2 Install all (1) adapters (6 pieces) Tool 9998248 Adapter Install onto the cylinder head and pull them
using the injector retainers.
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3 oil valve caliper, camshaft bridge and rocker arm bridge.
4 Install the rocker axle using the 9990185 lifting tool. Torque the tightening screws evenly along the
rocker arm to prevent the rocker arm from bending or warping song. Make sure the guide pin is
properly seated in the camshaft support bearing. according to 03-2, Description in Technical Data
Torque fastening rocker axles. Use transfer Torque wrench.
5 Install the middle section and oil pipe to the rocker bridge.
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6 Check valve clearance, see Valves and Unit Pumps, Adjustment page 201, For a description of all
valves see 03-2, Technical Data.
7 Remove the two control wires (two thin cable). Connect one of the two free-end connectors on the
control connector to ground. P0004964 9998248 P0004965 1. This is to avoid repeated
disassembly/reinstallation of the rocker bridge and unit pump to
8 Connect the other connector to a switch Motor positive connector connection.
9 Connect tool 9988539 pressure gauge to 9998248 adapter one On the cylinder.
10 Attention! Do not let the engine run for more than 15 seconds at a time. The interval should be 60
seconds. Run the engine with the starter until the pressure gauge needle stops (i.e. the maximum
pressure reading is reached). Read the value. Move the pressure gauge to the next cylinder. Repeat this test on all cylinders try.
11 Remove the center section and oil pipe from the rocker bridge.
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12 Remove the rocker bridge screws gradually and evenly so as not to bend them. Remove the bolts
and use the 9990185 lifting tool to carefully lift out the Arm bridge.
13 Remove all adapters from all cylinders, tool 9998248 Orchestration.
