Hola, esta informacion puede servir de apoyo, es para Toyota Tacoma 2.7L 4cil motor 2TR-FE 2010
CYLINDER HEAD, REPLACE
1.On models equipped with audio coded anti-theft system, obtain three-digit system code.
2.On all models, drain coolant from engine.
3.Remove MAF sensor, IAT sensor, air hose and upper air cleaner as a unit, then the lower air cleaner housing, Fig. 1.
4.Disconnect throttle cable from throttle body, then remove intake air connector tube.
5.On models equipped with A/C, remove A/C idle-up valve.
6.On models equipped with power steering, proceed as follows:
a.Remove power steering belt and idler pulley.
b.Remove power steering pump pulley using flexible Y wrench, tool No. 09960-10010, or equivalent, to hold pulley, Fig. 2.
c.Then, without disconnecting hoses, remove power steering pump and position aside.
d.Remove power steering pump mounting bracket.
7.On all models, disconnect spark plug wires, then disconnect and remove complete distributor.
8.Disconnect and remove water outlet and ECT sender form engine as a unit.
9.Disconnect and remove all connectors and hoses from throttle body, then remove throttle body.
10.Disconnect all electrical connectors and wiring attached to cylinder head and components.
11.Disconnect heater bypass hose, then remove cylinder head rear cover.
12.Remove EGR valve, vacuum modulator and connecting pipe, disconnecting required water and vacuum lines.
13.Remove intake chamber stay, then the fuel return pipe. When disconnecting fuel lines use a suitable container to collect any spilled fuel, loosen fuel connections slowly to allow pressure to bleed off.
14.Remove bolts to remove intake air chamber from intake manifold, then the fuel inlet tube.
15.Remove fuel delivery pipe and injectors as a unit, then the intake manifold.
16.Disconnect both oxygen sensor connectors, then remove front exhaust pipe.
17.Remove exhaust manifold, then the No. 1 and No. 2 engine hanger hooks.
18.Remove cylinder head cover, then the spark plugs.
19.Turning engine clockwise, set No. 1 cylinder to TDC compression stroke, Figs. 3 and 4. Remove timing chain tensioner.
20.Remove two rubber semi-circular plugs from head, then place a suitable wrench on the hex part of exhaust camshaft, remove distributor gear and bolt.
21.Place a suitable wrench on hex part of intake camshaft, then remove cam drive sprocket and bolt. Allow chain and sprocket to rest on chain guide rails.
22.Turn exhaust camshaft with a suitable wrench until service bolt hole is accessible, Fig. 5. Install a 6 X 1.0 X 16-20 mm bolt into service hole to secure spring loaded sub gear to main exhaust camshaft gear.
a.Loosen camshaft bearing caps in several stages in sequence outlined in Fig. 6, then remove bearing caps.
b.Camshaft must be lifted from head straight and level. Do not pry or use force. Due to tight tolerances, if cam is not lifted out of cylinder head straight and level, cam or head breakage could occur. If binding occurs reinstall No. 3 bearing cap, lightly tighten bolts, then while lifting cam gear, loosen bearing cap bolts evenly to allow camshaft to come out of head straight and level.
c.Repeat steps a and b above to remove intake camshaft, using sequence outlined in Fig. 7 to loosen bearing caps.
23.Remove two cylinder head bolts located inside front of cam chain passage, then loosen cylinder head bolts in several stages in sequence outlined in Fig. 8.
24.Lift cylinder head up off of dowel pins to remove from engine.
25.Remove and store, keeping together in order, lifters, adjustment shims, valves, valve springs and retainers.