Nissan Repair/Transmission removal on 1986 Nissan Pickup to replace clutch
boo wrote at 2012-10-19 07:31:25
remove carpet and take 4 screws out from plate around shifter remove take Trans and push back
ddietz wrote at 2012-11-13 12:46:43
197086 (521, 620 and 720D Series)F4W63, F4W71B and FS5W71B1.Disconnect the negative battery cable.
2.On 197586 models only, remove the shift lever from inside the cab. It is retained to the shaft rail by a Cclip, accessible under the boot. Remove the C-clip and retaining pin, then remove the lever.
3.Raise the vehicle and support it with jackstands.
4.On 197074 models, unscrew the nut securing the bottom of the shifter to the transmission shifting mechanism.
5.Disconnect the exhaust pipe from the exhaust manifold. On trucks with a catalytic converter, also remove the exhaust pipe bracket next to the speedometer cable by unscrewing the two mounting bolts.
6.Remove the clutch slave cylinder from the transmission case.
7.Disconnect the speedometer cable from the transmission extension housing, then disengage the back-up light and transmission switch wires at the switch(es).
8.Remove the bracket holding the center bearing of the driveshaft on the third crossmember of the frame.
9.Remove the driveshaft(s).
NOTE: On 4wd models, this requires removal of the transfer case, which should be performed at this time.
10.Support the engine with a floor jack located under the oil pan. Place a block of wood between the jack and the oil pan to prevent damage to the oil pan. Support the transmission with a jack.
11.Remove the rear engine mount securing bolts and the crossmember mounting bolts. The 197071 models (521 series) do not have a removable crossmember; only the rear engine/transmission extension housing mount is removable from the crossmember.
12.Remove the starter motor.
13.Remove the bolts securing the transmission to the engine, pull the transmission toward the rear until the transmission mainshaft is free of the back of the engine.
14.On 197071 models, place the rear of the transmission on the crossmember and then pull the transmission down toward the front of the truck and out from under the vehicle.
15.On 197286 models, separate the transmission from the engine, then lower the transmission out from under the truck.
16.Before installing the transmission, clean the mating surfaces of the engine and transmission thoroughly.
17.Lightly coat the input shaft splines with grease.
18.Reverse the removal procedures. Tighten the engine-to-transmission bolts to 1720 ft. lbs. (2327 Nm) for 197073 vehicles, 2936 ft. lbs. (3949 Nm) for 197476 vehicles or to 3243 ft. lbs. (4358 Nm) for 197786 vehicles.
NOTE: On the 5-speed transmission, the two bottom bolts are tightened to 79 ft. lbs. (912 Nm).
19.Tighten the crossmember-to-chassis bolts to 2027 ft. lbs. (2737 Nm) and the clutch slave cylinder mounting bolts to 1822 ft. lbs. (2430 Nm). Be sure to align the marks made earlier on the U-joint and differential flange when installing the driveshaft, to maintain driveline balance.
Fig. 1: Bottom view of the transmission 197074 F4W63