Technical data

14
Design and function
New sea water pump
Stop function with solenoid valve
New electrical system with sealed connectors
and cables run in flexible hoses. Junction boxes,
monitors and sensors have rubber mountings (vi-
bration reducing)
New alternator (engines with 24V electrical sys-
tems)
TAMD63P-A – TAMD63L-A
TAMD63L-A has:
Lower power rating
Injection pump with changed settings
New injector with changed opening pressure and
other hole design
Turbocharger with wastegate valve
TAMD71A – TAMD71B
TAMD71B has:
Higher power
New cylinder liners, pistons and piston rings. The
upper piston ring is of the “Keystone” type.
Injection pump with changed settings
Injectors with higher opening pressure
New stop solenoid
TAMD71B – TAMD72A
TAMD72A has:
Higher power
Modified cylinder heads with new valve seats
(inlet and exhaust valves).
Changed valve clearance (inlet and exhaust)
New upper piston rings (higher) of the “Key-
stone” type.
New pistons with higher compression ratio and
suited to the new piston rings.
Larger oil cooler
Different oil change intervals
New injection pump with higher injection pressure
and changed settings.
Reinforced pump coupling
New centrifugal regulator
New injectors with changed injection pressure
Reinforced supply pipes
New turbocharger with separate wastegate
Electric starting heater and by-pass valve are
extra equipment (not normally needed because of
the higher compression)
New external styling
Design differences, engine
versions
This workshop manual applies to all engines of the
6(x) series; TAMD61A, TAMD62A, TAMD63L-A
and TAMD63P-A, and from the 7(x) series;
TAMD71A, TAMD71B, TAMD72A, TAMD72P-A
and TAMD72WJ-A.
The most important differences are:
TAMD61A – TAMD62A
TAMD62A has:
Higher power
Pistons with modified profiles
Injection pump with changed settings
Different oil change intervals
New external design
TAMD62A – TAMD63P-A
TAMD63P-A has:
Completely new marinisation, installation volume
reduced by about 30%
Higher power
Low rotation cylinder head with new valve seats
for both inlet and exhaust valves.
Increased valve clearance (inlet and exhaust)
Pistons with modified combustion chambers
New piston rings
Higher compression
Injection pump with RQV regulator and changed
settings
Reinforced pump coupling
5-hole injector nozzles with higher opening pres-
sure
Reinforced (preloaded) supply pipes
Turbine optimised for high torque, integrated
wastegate
Washable air filter
Lubrication system with “by-pass” oil filter
New oil filter bracket with horizontally located oil
filter
Larger oil cooler (same as on TAMD72)
New galvanized sheet metal sump (rubber insulat-
ed from cylinder block for lower engine noise)
New heat exchanger with integrated expansion
tank
New aftercooler. Modified water flow, incoming
water passes aftercooler before heat exchanger
New belt driven coolant pump