(3) Make sure that the access platform is in position.
(4) On the overhead panel 20VU, make sure that the ENG1(2) FIRE pushbutton switch is released.
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B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Make sure that the thrust reverser doors are open (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 75-22-10-040-053
C. Make sure that the thrust reverser is unserviceable (Ref. TASK 78-30-00-481-041).
4. Procedure
_________
(Ref. Fig. 401/TASK 75-22-10-991-300, 402/TASK 75-22-10-991-301)
Subtask 75-22-10-420-051
A. Installation of the LPTACC Valve
(1) Assemble together the LPTACC valve (90), the bracket (150) and the airscoop (100) as follows:
(a) Put the LPTACC valve (90) on a workbench. Remove blanking parts from the air/fuel orifices.
(b) Lubricate the threads of six bolts (70) and of two bolts (160) with graphite grease (Material No. CP2101).
(c) Put the air scoop (100) and the bracket (150) in their correct position relative to the LPTACC valve (90) and attach these items to the valve (90) with the six bolts (70).
NOTE : The two longest bolts (70) are for attachment of bracket
____ (150) and air scoop (100) to LPTACC valve (90) in this assembly.
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(d) Install the two bolts (160) to complete the attachment of bracket
(150) to the LPTACC valve (90).
(e) TORQUE the six bolts (70) and the two bolts (160) to between 100 and 110 lbf.in (1.13 and 1.24 m.daN).
(2) Install the assembly of LPTACC valve, bracket and airscoop on the engine as follows:
(a) Lubricate the two bolts (140) with graphite grease (Material No. CP2101).
(b) Carefully put the valve assembly (90) in its correct position relative to the engine. Attach it to the inboard core engine bracket (130) with the 2 bolts (140), bolt heads forward. Tighten bolts (140) with your hand.
(3) Lubricate the two bolts (120) with graphite grease (Material No. CP2101).
(4) Install the two bolts (120) to attach the air scoop (100) to the forward bracket (110).
(5) TORQUE the two bolts (140) and the two bolts (120) to between 100 and 110 lbf.in (1.13 and 1.24 m.daN).
(6) Connect the drain tube (80) as follows:
(a) Lubricate the threads of the drain tube (80) coupling nut with engine oil (Material No. CP2442).
(b) Connect the coupling nut of drain tube (80) to the drain nipple of LPTACC valve (90).
(c) TORQUE the coupling nut to between 135 and 150 lbf.in (1.52 and
1.69 m.daN).
(7) Connect the fuel manifold plate (20) to the LPTACC valve (90) as follows:
(a) Make sure the related mating surfaces are clean.
(b) Make sure the gasket (40) is in good condition. If not, replace by a new one.
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(d) Lubricate four bolts (30) with graphite grease (Material No. CP2101) and install to attach the fuel manifold plate (20) to the LPTACC valve (90).
(e) TORQUE the six bolts (30) to between 100 and 130 lbf.in (1.13 and
1.46 m.daN).
(8) Install the clamp (60) to connect the LPT cooling air tube (50) to the LPTACC valve (90).
(9) TORQUE the clamp attachment nut to between 40 and 50 lbf.in (0.45 and
0.56 m.daN).
(10) Remove blanking caps from the electrical connectors and from the electrical receptacles of the valve (90).
(11) Connect the two electrical connectors (10) to the electrical receptacles of the valve (90). Fully tighten the connectors with your hand.
Subtask 75-22-10-410-052
B. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
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