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安装6081强鹿约翰迪尔柴油发动机气缸盖和带帽螺钉扭矩参数方法

2022/8/23 7:23:45

重要事项：始终彻底检查新气缸盖垫片是否存在制造缺陷。退回任何未通过检查的垫片。

确保气缸盖和缸体垫片表面清洁、干燥且无任何油安装气缸盖

1.将新的缸盖垫片放在缸体上。不要在垫片上使用密封剂；安装干燥。

重要事项：如果缸盖降到缸体上，并且缸盖在定位销上的位置不正确，则拆下缸盖并安装新垫片。不要再次尝试将气缸盖重新放置在同一垫片上，因为防火环可能会损坏。

2.使用适当的起吊设备将气缸盖均匀地降到缸体上的正确位置。确保缸盖正确定位在定位销上，并平放在缸体顶部甲板上。

重要事项：仅建议在6081强鹿约翰迪尔柴油发动机上使用标有“特殊”（上图）的ASTM 180级法兰头螺钉。安装气缸盖时，务必使用新的带帽螺钉。带帽螺钉只能使用一次。

不要使用多粘度油润滑带帽螺钉，建议使用SAE30。

3.将整个带帽螺钉浸入清洁的SAE30强鹿约翰迪尔柴油发动机机油中。让多余的油滴下。

4.将标记为“特殊”的正确长度带帽螺钉安装在所示的正确位置，并使用本组下一步所述的扭矩-屈服拧紧程序拧紧。参见扭矩-屈服带“特殊”序列号（-199999）的180级法兰头带帽螺钉在这个组中。

箭头（A）指向强鹿约翰迪尔柴油发动机前部。

气缸盖带帽螺钉

气缸盖中的长度位置

134毫米（5.2英寸）2、3、4、5、6、7

149毫米（5.9英寸）23、25、17、21、19

175毫米（6.9英寸）1、15、14、13、12、11、10、8

203毫米（8.0英寸）16、20、22、18、26、24、9

法兰头带帽螺钉的扭矩-180级，标记“特殊”序列号（-199999）

箭头（A）指向强鹿约翰迪尔柴油发动机前部。

重要事项：不要使用多粘度油润滑带帽螺钉。

1.用清洁的SAE30强鹿约翰迪尔柴油发动机机油润滑带帽螺钉，并将其安装在如前所述的正确位置。

2.将17号带帽螺钉拧紧至80 N•m（60 lb-ft），然后依次从1号带帽螺丝开始，通过26号带帽螺栓，将所有带帽螺钉紧固至规范。

有头螺钉位置

气缸盖法兰头“特殊”带帽螺钉（无规格垫圈）-初始扭矩80牛顿·米（60磅-英尺）

3.使用防油笔、铅笔或记号笔，在每个带帽螺钉头的整个顶部绘制一条平行于曲轴的线。这条线将用作参考标记。

重要事项：如果带帽螺钉意外拧紧超过90 在任何一个顺序中，不要松开带帽螺钉，而是在下一个拧紧顺序中进行调整。

4.依次（从1号带帽螺钉开始，然后继续穿过带帽螺钉26），将每个带帽螺钉转动90. 带帽螺钉顶部的线将垂直于曲轴。

5.再次，依次（从1号带帽螺钉开始，然后穿过26号带帽螺丝）将每个带帽螺丝旋转90. 带帽螺钉顶部的管路现在将与曲轴平行。

6.最后，依次（从1号带帽螺钉开始，然后穿过26号带帽螺丝）。将每个带帽螺钉转动90度, 使得带帽螺钉顶部的线尽可能接近于垂直于曲轴。不需要在扳手的一次摆动中获得最后一圈。步骤4、5和6的总转动量为270  5..

重要事项：有头螺钉不得拧紧扭矩，以使有头螺钉拧紧

总共超过270个  5..强鹿约翰迪尔柴油发动机A前部

Install Cylinder Head and Cap Screws Serial Number ( —199,999)

IMPORTANT: ALWAYS thoroughly inspect new cylinder head gasket for possible manufacturing imperfections. Return any gasket that does not pass inspection.

Be sure cylinder head and block gasket surfaces are clean, dry, and free of any

oil. Installing Cylinder Head

1. Put a new head gasket on cylinder block. Do not use sealant on gasket; install dry.

IMPORTANT: If cylinder head is lowered onto cylinder block and the head is not positioned correctly on locating dowels, remove cylinder head and install a new gasket. DO NOT try to reposition cylinder head on the same gasket again since the fire ring may possibly be damaged.

2. Lower cylinder head evenly to correct position on block using appropriate lifting equipment. Make sure that head is positioned correctly over dowels and sits flat on cylinder block top deck.

IMPORTANT: Only ASTM Grade 180 Flanged-Head cap screws marked “SPECIAL” (upper illustration) are recommended for use on 6081 engines. ALWAYS use NEW cap screws when installing cylinder head. Cap screws may be used only one time.

DO NOT use multi-viscosity oils to lubricate cap screws, SAE30 is recommended.

3. Dip entire cap screw in clean SAE30 engine oil. Allow excess oil to drip off.

4. Install correct length cap screws marked “SPECIAL” in proper locations shown and tighten using the TORQUE-TO-YIELD tightening procedure, described next in this group. See TORQUE-TO-YIELD

FLANGE-HEAD CAP SCREWS—GRADE 180 MARKED “SPECIAL” SERIAL NUMBER ( —199,999)

in this group.

Arrow (A) points toward front of engine.

Cylinder Head Cap Screws

Length Location in Cylinder Head

134 mm (5.2 in.) 2, 3, 4, 5, 6, 7

149 mm (5.9 in.) 23, 25, 17, 21, 19

175 mm (6.9 in.) 1, 15, 14, 13, 12, 11, 10, 8

203 mm (8.0 in.) 16, 20, 22, 18, 26, 24, 9

Torque-to-Yield Flanged-Head Cap Screws— Grade 180 Marked “SPECIAL” Serial Number ( —199,999)

Arrow (A) points toward front of engine.

IMPORTANT: DO NOT use multi-viscosity oils to lubricate cap screws.

1. Lubricate cap screws with clean SAE30 engine oil and install in their proper locations as outlined previously.

2. Tighten cap screw No. 17 to 80 N•m (60 lb-ft), then sequentially start at cap screw No. 1 and proceed through cap screw No. 26, tightening all cap screws to specifications.

Head Cap Screw Locations

Cylinder Head Flanged-Head “SPECIAL” Cap Screws (No

Specification

Washers)—Initial Torque................................................. 80 N•m (60 lb-ft)

3. Using an oil-proof pen, pencil, or marker, draw a line parallel to the crankshaft across the entire top of each cap screw head. This line will be used as a reference mark.

IMPORTANT: If a cap screw is accidentally tightened more than 90 in any one sequence, DO NOT loosen cap screw but make adjustments in the next tightening sequence.

4. Sequentially (start at cap screw No. 1 and proceed

through cap screw No. 26) turn each cap screw 90. Line on top of cap screw will be perpendicular to crankshaft.

5. Again, sequentially (start at cap screw No. 1 and proceed through cap screw No. 26) turn each cap screw 90. Line on top of cap screw will now be parallel to crankshaft.

6. Finally, sequentially (start at cap screw No. 1 and proceed through cap screw No. 26). Turn each cap screw 90, SO THAT LINE ON TOP OF CAP SCREW IS AS CLOSE AS POSSIBLE TO BEING PERPENDICULAR TO THE CRANKSHAFT. It is not necessary to obtain the final turn in one swing of the wrench. TOTAL AMOUNT OF TURN FROM STEPS 4, 5, AND 6 IS 270  5.

IMPORTANT: Cap screws MUST NOT be tightened Torque-to-Yield Tightening of Head Cap Screws

more than a total of 270  5. A—Front of Engine

电子喷油嘴

为了持续满足更高的性能和排放要求，6090 PowerTech Plus 强鹿约翰迪尔柴油发动机必须更加严格地限制喷油量的变化。电子喷油嘴有 8 个校准点，它们都由 ECU 监控。若要更严格限制喷油量的变化，需要 ECU 对每个气缸进行喷油嘴校准。如果出于诊断目的更换喷油嘴或在气缸之间调换喷油嘴，都必须进行喷油嘴校准。ECU 需要电子喷油嘴的零件号、序列号和燃油校准代码。可通过 Service ADVISOR™ 2.6 从约翰迪尔 Custom Performance™ 上下载来进行喷油嘴校准。标签的 QR 部分位于喷油嘴顶部，其中包含可手动插入或用 1-D 条形码阅读器插入的序列号。有关完整的电子喷油嘴校准过程，请参见《部件技术手册》(CTM) 385。

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